SFS Terms of Service

Article 1 (The Service)

The Service provides each Customer with an isolated Nextcloud-based file server environment, generally at “name-selected-by-the-Customer.sfs.sola.inc.”

The Service is delivered from servers located in Japan and is available to both organizations and individuals. A Customer using the Service outside Japan is also responsible for complying with local law. The Company may restrict availability by region for legal, safety, or operational reasons.

The Service is provided on a best-effort basis. Unless separately agreed in writing, there is no guaranteed service level for uptime, recovery time, or support response.

Article 2 (Registration and Accounts)

The Customer must provide an accurate name or organization name and a reachable email address. Registration uses an email address and password, or authentication through a Google or Microsoft account.

The Customer must protect passwords, two-factor authentication details, and other credentials and must not lend or transfer them. The owner of an organization account is responsible for managing users within that organization.

The Company may reject or cancel registration for false information, a previous material breach, involvement with anti-social forces, or another reasonable cause.

Article 3 (Customer Administration and Data)

The Customer manages users, permissions, sharing links, additional apps, and stored data within Nextcloud. Users invited by the Customer act under the Customer's administration.

Rights in files and other data stored by the Customer ("Customer Data") remain with the Customer or the relevant rights holder. The Company handles Customer Data only as necessary to provide, maintain, back up, and secure the Service, provide support, and comply with law.

The Customer may store only data that it is legally entitled to handle and that does not infringe third-party rights.

Article 4 (Plans and Fees)

All fees include Japanese consumption tax. The Free plan includes 20GB. There is no per-user surcharge.

• Additional storage +100GB: JPY 1,200 monthly / JPY 13,200 annually
• Additional storage +500GB: JPY 5,000 monthly / JPY 55,000 annually
• Additional storage +1TB: JPY 9,000 monthly / JPY 99,000 annually

Annual billing charges the equivalent of 11 monthly payments once per year; it is not a free trial. For multiple units, the fee and added capacity are the selected unit price and capacity multiplied by the quantity.

Current pricing and selections are shown on the pricing page, dashboard, and purchase screen. For a material pricing change affecting an existing Customer, the Company will provide advance notice through the Service or by email and will generally apply it from a subsequent renewal period.

Article 5 (Payment and Automatic Renewal)

Paid storage is charged by credit card through Stripe. The Company does not retain card numbers.

Monthly plans renew each month and annual plans renew each year until canceled. The next billing period is charged at sign-up and on each renewal date.

Capacity or quantity changes generally take effect immediately. Stripe prorates unused and remaining time. When switching between monthly and annual billing, unused time is settled and a new billing period starts at the time of the switch.

Where additional payment authentication is required, the existing subscription may remain unchanged until payment is completed.

Article 6 (Cancellation, Account Deletion, and Refunds)

A paid subscription may be canceled at any time through the Stripe Customer Portal. Cancellation stops automatic renewal, and the Service remains available until the end of the current billing period.

Account deletion in the dashboard is a separate action. It immediately cancels the paid subscription, waives the remaining term, and starts deletion of the Dedicated Environment and Customer Data. Deleted data cannot be recovered through ordinary support.

The Company does not provide prorated refunds for Customer-initiated cancellation, capacity changes, or account deletion, except where required by law or separately approved by the Company.

Article 7 (Failed Payment)

If payment fails, the Company notifies the registered email address and generally keeps the Service functional for 14 days after the failure.

If payment remains unresolved after 14 days, the Dedicated Environment is suspended. The Company sends a deletion date after 30 days of suspension and deletes the Dedicated Environment and Customer Data on or after seven days following that notice.

If payment is completed before deletion begins, the environment is generally restored. Data already deleted cannot be recovered.

Article 8 (Over-Quota Read-Only State)

If a capacity reduction leaves usage above the contracted capacity, the Dedicated Environment immediately becomes read-only. Viewing, downloading, and deleting files remain available, but new writes are blocked.

If the overage continues for 30 days, the Company sends a deletion date. The Dedicated Environment and Customer Data are deleted on or after 14 days following that notice.

Before deletion begins, reducing usage to the contracted capacity or buying additional storage automatically removes the read-only state and deletion schedule.

Article 9 (Data and Backups)

The Company maintains encrypted backups for disaster recovery but does not guarantee recovery of every version of data. The Customer should also keep its own backup of important data.

After data is removed from the active environment, it may remain for a limited period only in versioned encrypted backups. Backups are automatically overwritten and removed under the applicable retention cycle.

After account deletion or lifecycle deletion, the Company does not accept ordinary Customer requests to restore the deleted environment.

Article 10 (Prohibited Uses)

The Customer must not use the Service to violate law or public policy; facilitate crime; store or share child sexual abuse material, unlawful obscene content, or infringing content; impersonate others; gain unauthorized access; distribute malware; scan ports; infringe intellectual property, privacy, reputation, or other rights; overload systems; mine cryptocurrency; create bulk accounts; evade capacity limits; abuse the Free plan; resell the Service without written approval; benefit anti-social forces; or materially harm the Service or other users.

Article 11 (Investigation, Restrictions, and Reports)

Where a breach, rights violation, or security issue is reasonably suspected, the Company may review relevant logs and Customer Data and may disable sharing, make an environment read-only, suspend it, delete data, or terminate the agreement. Where the matter is not urgent, the Company will give notice of the reason and available remedy where reasonably possible.

The Company may provide necessary information to authorities where required by law or necessary to protect life, safety, or property.

Reports of unlawful or infringing content may be sent to contact@sola-air.com.

Article 12 (Maintenance, Changes, and End of Service)

The Company may temporarily suspend all or part of the Service for maintenance, incidents, security response, natural disasters, network failures, or other unavoidable circumstances. Planned maintenance will be announced where reasonably possible.

The Company may change specifications for safety, usability, legal compliance, or another reasonable reason. Materially adverse changes will be announced in advance where reasonably possible.

If the Service is discontinued, the Company will give advance notice and a reasonable export period, except where an emergency or law makes that impracticable.

Article 13 (Intellectual Property)

Rights in the Service, portal, documentation, logos, and materials provided by the Company belong to the Company or their respective rights holders. These Terms do not transfer those rights to the Customer.

Nextcloud and other open-source software are governed by their respective licenses.

Article 14 (Warranty and Liability)

The Company does not warrant that the Service will always be uninterrupted, fit every purpose, or prevent all data loss.

Where the Company is liable, liability is limited to ordinary and direct loss caused by a matter attributable to the Company, up to the total fees paid by the Customer for the Service during the six months before the loss occurred.

This limitation does not apply to intentional misconduct or gross negligence by the Company, or where a limitation is not permitted under the Consumer Contract Act or other applicable law.

Article 15 (Changes, Governing Law, and Contact)

The Company may amend these Terms where the amendment benefits customers generally, or where it is reasonable and consistent with the purpose of the agreement in light of its necessity and proportionality. The content and effective date will be announced in advance through the Service or by email.

Japanese law governs these Terms and the service agreement. Unless mandatory law provides otherwise, the Tokyo District Court has exclusive jurisdiction at first instance.

• Business operator: Sola K.K. (Sola株式会社)
• General and rights-related inquiries: contact@sola-air.com
• Privacy inquiries: privacy@sola-air.com