cyborg shiro lives rent free in the tissues
He was created for sexy purposes in which Ichigos murderous instinct is stored inside and he is ofc super highly codependent on Ichigo because of the shared neural load whatever
Also he has three stage biometric locks
1. retinal/eye scan
2. Tongue fingerprint
3. Secret
Yes Ichigo must make deep intimate eyecontact with shiro whilst pressing his fingers into his mouth to get to the print scanner on his tongue

















