No, Mushino only requires you to specify an email, nickname and country of residence. You can get started in 30 seconds.
The email address lets you access your account later. We will never sell your email address to third parties, and we will never send you promotional garbage. The email address is encrypted both at rest (using AES-256 encryption) and in transit (using TLS 1.2).
The email address lets you access your account later.