Open Settings → Account in Mitoshi. Sign in with the original passkey or the wallet for the account you want to delete.
Under Your data, choose Delete Mitoshi account. Type DELETE, hold to confirm, then sign the fresh deletion request. You can undo it for five seconds.
If you cannot sign in, use the contact form to request help. Include your Mitoshi wallet address and a way to reach you; do not send a private key, passkey, password or recovery phrase.
Mitoshi removes its registered passkey credentials and backup mappings, so their existing Mitoshi sessions stop working. Your device may still list the passkey; remove it in your device password manager if you wish.
Mitoshi removes your profile, posts, room messages, reactions, follows, blocks, reports, game profile and scores, signed-in contact messages, X account link and instructions, and authored strategy text.
If you used an external wallet, Mitoshi cannot delete that wallet. Its Mitoshi profile and sessions are removed; signing in again can start a new profile.
Your Tempo address and transactions cannot be erased from the blockchain. Mitoshi may continue to index those public records, including trades and positions.
Fee sponsorship, faucet and anti-abuse records may be kept to enforce testnet limits and investigate misuse. An account-closure marker is held for 31 days to invalidate older sessions, then expires.