Terms of Service

These Terms of Service (hereinafter referred to as the "Terms") set forth the conditions for use of Convia (hereinafter referred to as the "Service") operated by Clustium Inc. (hereinafter referred to as the "Company"). Users should carefully read these Terms before using the Service.

Article 1 (Application)

These Terms apply to all relationships concerning the use of the Service between the Company and all persons who use the Service (hereinafter referred to as "Users"). Users shall use the Service in accordance with these Terms.
With respect to the relationship between these Terms and any contract separately concluded in addition to these Terms between the Company and a User, an Organizer, or any other person (hereinafter referred to as an "Individual Contract"; including contracts for Organizers, etc. provided for in Article 4), if the provisions of these Terms conflict with the provisions of the Individual Contract, the provisions of the Individual Contract shall prevail. However, this shall not apply if such precedence is restricted by the Consumer Contract Act or other mandatory laws and regulations.

Article 2 (Definitions)

In these Terms, the meanings of the terms set forth in the following items shall be as prescribed in each such item.

"User" means a person who registers an account for the Service or uses the Service.
"Organizer" means an organization that hosts academic conferences or other events and manages event information and tickets on the Service in its relationship with the Company.
"Organization Member" means a User who belongs to an Organizer and has been granted management authority for the events and tickets of such Organizer by the method prescribed by the Company.
"Participant" means a User who purchases a Ticket through the Service in order to participate in an event.
"Ticket" means something that represents the right to participate in an event or the right to receive services equivalent thereto, and that is sold on the Service.
"Option" means an additional service that may be selected in connection with a Ticket.
"Reservation" means temporarily holding Ticket inventory and placing it in a state in which the payment procedure can proceed.
"Payment" means paying the price after Reservation and finalizing the purchase.

Article 3 (Content of the Service)

The Service provides functions concerning participant registration, Ticket sales, Payment, confirmation of purchase information, and other matters in order to support the operation of academic conferences and other events. Functions such as creating and editing events, managing Tickets, and viewing purchaser lists are provided as a form of use for Organization Members belonging to Organizers.
Information concerning the event itself, such as the event name, event dates, description, venue details, and program content, shall be provided under the responsibility of the Organizer or Organization Members, and the Company does not guarantee its accuracy, completeness, or legality.

Article 4 (Contractual Relationships)

The principal legal relationships concerning the Service are organized as follows.
1. The Company and Users: Between all persons who use the Service (the Users set forth in Article 2, item 1, including Organization Members and Participants) and the Company, a relationship of rights and obligations concerning the use of the Service is established based on these Terms.
2. Participants and Organizers: When a Participant purchases a Ticket or conducts participant registration or other procedures through the Service, contracts and other legal relationships concerning the event content, Ticket content, price, cancellation and refund, operation on the day of the event, and other matters of the relevant event are established between the Organizer of the relevant event and the Participant. The Participant shall pay, through the payment procedures provided by the Service (including processing by a payment processing service provider), the price of the relevant Ticket and any other monetary obligations displayed on the Service in connection therewith, as payment obligations borne to the Organizer based on the sale and purchase of the Ticket (even if the Company or a payment processing service provider temporarily receives the price as a payment route, the content of such obligations shall follow the relationship between the Organizer and the Participant). The Company is not a party to such contract, and provides, as the Service, processing of procedures, provision of functions concerning payment methods, posting of information, and other services as a platform.
3. The Company and Organizers: When an Organizer uses the Service to post event information, configure and sell Tickets, or conduct other operations necessary for hosting events, the Organizer is obligated to pay the Company usage fees and other consideration based on a separate contract between the Company and the Organizer or conditions prescribed by the Company for Organizers (hereinafter in this (3) referred to as "Contracts, etc. for Organizers"). The amount of usage fees and other consideration, payment timing, payment method, and other matters shall be as prescribed in the Contracts, etc. for Organizers. All or part of the consideration for services provided by the Company to the Organizer may be paid separately by the Organizer as usage fees, etc. prescribed in the Contracts, etc. for Organizers, or may be included as the Company's share in fees and other charges collected by a payment processing service provider and borne by the Organizer. Matters not prescribed in these Terms concerning the scope of services provided by the Company to the Organizer and other commercial transaction terms between the Company and the Organizer shall be governed by the Contracts, etc. for Organizers. However, with respect to acts by Organization Members belonging to an Organizer in operating the Service as Users, these Terms apply as prescribed in item 1.

Article 5 (User Registration)

In the Service, user registration shall be completed when a person wishing to register applies for user registration by the method prescribed by the Company after agreeing to these Terms, and the Company approves the application.
If the Company determines that any of the following reasons apply to an applicant for user registration, the Company may not approve the application for user registration, and shall have no obligation whatsoever to disclose the reason.
1. If the applicant reported false matters when applying for user registration
2. If the application is from a person who has violated these Terms
3. In any other case where the Company determines that user registration is not appropriate

Article 6 (Management of Email Address and Password)

Users shall appropriately manage, at their own responsibility, the email address and password registered for the Service (hereinafter collectively referred to as "Authentication Information").
Users may not, under any circumstances, transfer or lend Authentication Information to any third party, or share it with any third party.
If a login is made using a combination of Authentication Information that matches the registered information, it shall be deemed use by that User.
The Company shall not be liable for damages arising from the use of Authentication Information by a third party, except where there is intentional misconduct or gross negligence on the part of the Company.

Article 7 (Usage Fees and Payment Method)

Usage fees and other consideration borne by Organizers to the Company shall be as prescribed in Article 4.
If a person who bears a monetary obligation to the Company based on the preceding paragraph delays payment thereof, the Company may demand late payment damages at the rate of 14.6% per annum.

Article 8 (Organizer Consent Concerning Payment Processing Service (fincode))

This Article applies only to Organizers prescribed in Article 2, item 2 (hereinafter in this Article referred to as "Tenants"). In this Article, the Company is referred to as the "Platform."

The Tenant shall grant the Platform authority of agency to conclude contracts between GMO Epsilon, Inc. and the Tenant concerning changes to usage fees, etc.
By agreeing to these Terms or continuing to use the Service (Convia), the Tenant shall be bound by the fincode by GMO Terms of Use prescribed by GMO Epsilon, Inc.
The Tenant agrees to provide accurate and complete information to the Platform, and permits the Platform to share such information and transaction information related to the use of fincode by GMO provided by GMO Epsilon, Inc. between the Platform and GMO Epsilon, Inc.

Article 9 (Use by Minors)

In these Terms, a minor means a person under 18 years of age.
In order for a minor to use the Service, the minor shall do so after obtaining in advance the consent of a person with parental authority or other legal representative (hereinafter referred to as a "Legal Representative") when conducting user registration, agreeing to these Terms, purchasing and paying for Tickets, or conducting other procedures prescribed by the Company.
The Company has no obligation, in user registration or other procedures, to independently conduct substantive confirmation of the User's age or the existence of consent of a Legal Representative (including requesting public personal authentication, submission of a consent form, or other similar procedures).
Users must not make false declarations concerning facts about themselves (including whether they are an adult or a minor, and, if a minor, whether consent of a Legal Representative exists). The Company shall not be liable for disputes, contractual or legal disadvantages, or other problems arising from false declarations, except where there is intentional misconduct or gross negligence on the part of the Company.

Article 10 (Purchase of Tickets)

The purchase of a Ticket is established when the Ticket is selected on the Service, reserved, and Payment is completed by the payment method designated by the Company.
If Payment is not completed within the validity period prescribed by the Company or the payment processing service provider after Reservation, the Reservation expires, and the relevant Ticket returns to a state in which it can be reserved again.
The Ticket sales period, price, inventory limit, content of Options, and other matters are set by the Organizer or Organization Members.
Payment is made through a payment processing service prescribed by the Company. Payment information such as credit card information is acquired and processed by the payment processing service provider, and the Company does not store Users' card numbers or similar information.

Article 11 (Cancellation and Refund)

The conditions for cancellation and refund of Ticket purchases shall be governed by the cancellation policy of the Organizer of the relevant event. If permitted by the cancellation policy, cancellation is possible through individual acceptance by the contact method guided by the Company or the Organizer.
The content, timing, and method of refunds shall be in accordance with the cancellation policy, the terms of the payment processing service provider, and the Company's procedures, and the actual processing timing depends on the payment method and processing by financial institutions. Refunds and other responses accompanying cancellation, postponement, content changes, etc. of an event shall be in accordance with policies prescribed by the Organizer, the cancellation policy, and conditions separately guided by the Company.

Article 12 (Prohibited Matters)

Users must not conduct the following acts when using the Service.

Acts that violate laws and regulations or public order and morals
Acts related to criminal acts
Acts that infringe the contents, etc. of the Service or copyrights, trademarks, or other intellectual property rights included in the Service
Acts that destroy or interfere with the functions of servers or networks of the Company, other Users, Organizers, or other third parties
Acts of commercially using information obtained through the Service by a method not approved by the Company
Acts that may interfere with the operation of the Company's services
Acts of unauthorized access or attempts thereof
Acts of collecting or accumulating personal information, etc. concerning other Users
Acts of using the Service for an unauthorized purpose
Acts that cause disadvantage, damage, or discomfort to other Users of the Service or other third parties
Acts of impersonating another User
Advertising, publicity, solicitation, or business activities on the Service that are not permitted by the Company
Acts for the purpose of meeting an unacquainted person of the opposite sex
Acts of directly or indirectly providing benefits to anti-social forces in relation to the Service
Resale of Tickets, listing them in auctions, or other transfer or commercial use by a method not approved by the Company
Acts of registering false information
Acts of falsely providing information concerning an event, secretly changing the substantial content of such event after display so as to cause Users to misunderstand, or attempting to conduct an event that violates laws and regulations or is contrary to public order and morals while pretending it is a lawful event
Other acts that the Company determines to be inappropriate

Article 13 (Intellectual Property Rights)

Copyrights and other intellectual property rights in programs, designs, trademarks, logos, text, etc. concerning the Service belong to the Company or legitimate right holders.
Users must not reproduce, modify, or distribute these beyond the scope of use of the Service based on these Terms.

Article 14 (Suspension, etc. of Provision of the Service)

If the Company determines that any of the following reasons exists, the Company may suspend or interrupt provision of all or part of the Service without prior notice to Users.
1. When conducting maintenance inspection or updating of computer systems related to the Service
2. When provision of the Service becomes difficult due to force majeure such as earthquake, lightning strike, fire, power outage, or natural disaster
3. When computers or communication lines, etc. stop due to an accident
4. In any other case where the Company determines that provision of the Service is difficult
The Company shall not be liable whatsoever for any disadvantage or damage suffered by Users or third parties due to suspension or interruption of provision of the Service.

Article 15 (Use Restrictions and Cancellation of Registration)

If a User falls under any of the following, the Company may, without prior notice, restrict use of all or part of the Service for the User or cancel the User's registration as a User.
1. If the User violates any provision of these Terms
2. If it is found that there is a false fact in registered matters
3. If there is a default on payment obligations such as fees
4. If there is no response to contact from the Company for a certain period
5. If there has been no use of the Service for a certain period since the last use
6. In any other case where the Company determines that use of the Service is not appropriate
The Company shall not be liable whatsoever for damages incurred by the User due to acts conducted by the Company based on this Article.

Article 16 (Withdrawal)

Users may withdraw from the Service and terminate the usage contract based on these Terms by the withdrawal procedure prescribed by the Company. Treatment after withdrawal shall be as prescribed by the Company.

Article 17 (Measures Against Organizers and Withdrawal, etc. of Event Listings)

Measures against Organizers: If the Company recognizes that any of the following items applies with respect to an Organizer, the Company may, regardless of whether or not there is a demand, and regardless of whether or not there is prior or subsequent notice, take measures that the Company determines necessary, including suspension or withdrawal of posting of event information concerning the relevant Organizer, suspension of Ticket sales, suspension or deprivation of management authority granted to Organization Members, refusal of use of the Service as an Organizer, and other measures.
1. When the Organizer violates these Terms or the Contracts, etc. for Organizers provided for in Article 4.
2. When there is no performance of usage fees or other monetary obligations to the Company, or when it is reasonably recognized that there is no intention to perform them.
3. When there has been a false declaration, impersonation, act of deceiving the Company or a third party, or any other act that destroys the relationship of trust.
4. When the Company determines that there is a risk that the Organizer will secretly change the content of an event to content substantially different from that at the time of registration or display, or attempt to conduct an event that violates laws and regulations or is contrary to public order and morals while pretending it is a lawful event.
5. When the Company determines that it is necessary due to laws and regulations concerning fund settlement, requests from payment service providers or other third parties, or prevention of illegal or fraudulent transactions.
6. In any other case where the Company reasonably determines that it is inappropriate to allow continued use of the Service as an Organizer.
The measures provided for in paragraph 1 of this Article may be conducted individually or collectively with respect to part or all of the events concerning the relevant Organizer. The Company shall not be liable for damages incurred by the Organizer, Participants, or third parties due to withdrawal of posting or suspension of sales based on this Article, except where there is intentional misconduct or gross negligence on the part of the Company. Transactions between Participants and Organizers shall be in accordance with Article 11 and other provisions.
Termination of use of the Service as an Organizer, remaining business processing after the measures provided for in paragraph 1 of this Article, settlement of usage fees, and other commercial transaction termination matters between the Organizer and the Company shall be as prescribed in the Contracts, etc. for Organizers or separately prescribed by the Company. Even if there is no provision in the Contracts, etc. for Organizers, taking the measures provided for in paragraph 1 of this Article shall not give rise to an obligation on the part of the Company with respect to the relevant Organizer continuing to use the Service as an organizer.

Article 18 (Disclaimer of Warranties and Disclaimers)

The Company makes no warranties, express or implied, that the Service is free from defects in fact or in law (including defects, errors or bugs, infringement of rights, etc. concerning safety, reliability, accuracy, completeness, validity, fitness for a particular purpose, security, etc.), or that the Service conforms to the specific purposes of Users, has the expected functions, merchantable value, and usefulness, can be used continuously, and will not experience defects.
The Company shall not be liable for any damages incurred by Users arising from the Service, or for damages incurred by Users in connection with suspension, interruption, or termination of provision of all or part of the Service, restrictions on use of the Service, cancellation of registration as a User, or other measures taken by the Company against Users based on these Terms, except where such damages are due to intentional misconduct or gross negligence of the Company or in any other case where the Company should be liable under laws and regulations. However, if the contract between the Company and a User concerning the Service (including these Terms) constitutes a consumer contract as prescribed in the Consumer Contract Act, this disclaimer provision shall not apply.
Even in the case prescribed in the proviso of the preceding paragraph, the Company shall not be liable for damages arising from special circumstances among damages incurred by Users due to default or tort caused by negligence of the Company (excluding gross negligence) (including cases where the Company or the User foresaw or could have foreseen the occurrence of damages). In addition, compensation for damages incurred by Users due to default or tort caused by negligence of the Company (excluding gross negligence) shall be limited to the amount of usage fees received by the Company from the relevant User in the month in which such damages occurred.
The Company shall not be liable, except where obligated under laws and regulations, for transactions, communications, disputes, etc. arising between Users and other Users, Organizers, or third parties in relation to the Service (including disputes between Organizers and Users concerning cancellation or postponement of events, content changes, and other matters concerning event holding).

Article 19 (Changes, etc. to Service Content)

The Company may change, add, or abolish the content, functions, screen composition, API composition, method of provision, and other elements constituting the Service, and Users shall consent thereto.

Article 20 (Changes to Terms)

The Company may change these Terms in response to amendments to laws and regulations, changes in the content of the Service, and other matters.
The changed Terms shall become effective from the time they are posted on the Service. For changes that require User consent under laws and regulations, the Company shall obtain consent by the method prescribed by the Company.

Article 21 (Handling of Personal Information)

The Company shall appropriately handle personal information acquired through use of the Service in accordance with the separately prescribed Privacy Policy.

Article 22 (Notice or Contact)

Notice or contact between Users and the Company shall be made by the method prescribed by the Company. Unless a User submits a change notification in accordance with the method separately prescribed by the Company, the Company shall deem the currently registered contact information to be valid and send notice or contact to such contact information, and such notice or contact shall be deemed to have reached the User at the time of transmission.

Article 23 (Prohibition of Assignment of Rights and Obligations)

Users may not assign to a third party or provide as security their status under the usage contract or rights or obligations under these Terms without the prior written consent of the Company.

Article 24 (Governing Law and Jurisdiction)

Japanese law shall be the governing law for interpretation of these Terms.
If a dispute arises in relation to the Service, the Fukuoka District Court shall be the exclusive court of agreed jurisdiction in the first instance.

Article 25 (Severability)

Even if any provision of these Terms is invalidated by laws and regulations, the validity of the other provisions shall not be affected.

Article 26 (Contact)

For inquiries concerning these Terms, please contact the following desk.

hello@clustium.com

Supplementary Provisions

Established: March 25, 2026
Last amended: April 7, 2026