Last updated: June 17, 2026
This page explains how to delete your account and data in the mobile application “Hanabi Bloom” (the “App”), provided by Callirrhoe Inc. (hereinafter “we,” “us,” or “our”). The App’s data is stored both on your device (game progress, display name, settings, etc.) and on Unity Gaming Services (“UGS”) for online features (authentication ID, player display name, scores, ranking records, friends, battle records). You can delete it using any of the following methods.Important: Deleted accounts and data generally cannot be restored or undone. Information that we are required to retain by law, or that is necessary for review purposes or to investigate and prevent fraud or abuse, may be kept for the period described in “Retained Data and Retention Period” below.
Method A: Delete from Within the App (Recommended: on-device + online) This is the most reliable method, deleting both on-device data and online data at once.- In the App, tap “Settings” → “Delete Account / Data.”
- When you confirm and execute deletion, in addition to the on-device game data (player display name, progress, scores, owned coins, settings, captured images in the in-app gallery, etc.), we delete, to the extent technically possible, your data on the servers we manage (UGS). Specifically, we delete your authentication account (anonymous, or the Google / Apple linked identifier and player display name) and the cloud-saved data associated with that account (progress/settings sync data, friend battle and battle inbox records, purchase/entitlement information, etc.).
- Images that you yourself have exported to your device’s photo library (camera roll) remain undeleted, as they belong to you.
- Regarding ranking scores and friend relationships: When your authentication account is deleted, the scores recorded in the ranking and your player ID remaining in other users’ friend lists become information that cannot identify you personally (pseudonymized records with the player ID detached). These are deleted in accordance with UGS’s retention policy and our periodic cleanup.
Method B: Delete via Device Operation (on-device only)
- Uninstalling the App, or running “Settings → Apps → Hanabi Bloom → Storage → Clear data” on your device, deletes the on-device data.
- However, this operation alone does not delete the online data on UGS. If you also wish to delete online data, please use Method A above or Method C below. Note that an unlinked (anonymous) account cannot be restored once the App is uninstalled.
Method C: Request Deletion by Email (e.g., if you have already uninstalled)
To prevent third parties from deleting accounts through impersonation, we only accept requests when identity can be verified.- If linked with a Google or Apple account: Please send an email from the linked email address to privacy@hanabibloom.com with the subject “Data Deletion Request.” Since identity is verified by the linked email, providing your player ID or display name is optional. Please note that we cannot perform deletion based solely on a player ID or display name, as identity cannot be verified.
- If not linked (anonymous): Since there is no way to verify your identity from outside the App, we cannot accept deletion via the email channel (to prevent impersonated deletion by third parties). Please delete the data yourself using Method A (in-app) or Method B (device side) above. Even if you cannot delete it while unlinked, records remaining on the server are automatically deleted if there is no access for 365 days or more from the last login (see “Retained Data and Retention Period” below).
- For linked accounts, including deletion of any name, email address, and inquiry content we have received, we will verify your identity and delete the data within 30 days of receipt, then notify you of completion.
Data That Will Be Deleted
- On-device data: Player display name, game progress, reached stages, scores, owned coins, owned fireworks, various settings, and captured images saved in the in-app gallery
- Online data (UGS): Authentication account (anonymous ID, or Google / Apple linked identifier), player display name, cloud-saved progress/settings, friend relationships, friend battle and battle inbox records, and purchase/entitlement information
- Inquiry information: The name, email address, and content you provided when contacting us (deleted upon request via Method C)
Retained Data and Retention Period
Even after deletion, some data may be retained for a certain period for the following reasons.| Data Type | Retention Period |
|---|---|
| In-app purchase / subscription transaction records | Purchase processing is handled by Google / Apple. We may retain records to the extent necessary for accounting and tax purposes, based on applicable laws (up to 7 years) |
| Ranking scores / friend relationships (pseudonymized) | After the player ID is detached and pseudonymized, deleted in accordance with UGS’s retention policy and our periodic cleanup |
| Records stored on other users’ side (battle challenges/results, etc.) | Pseudonymized information without names or contact details; deleted in accordance with each data’s retention period and our periodic cleanup |
| Inactive anonymous (guest) accounts | For anonymous accounts that have never made a purchase and are not linked to an external account, all server data is automatically deleted if there is no access for 365 days or more from the last login |