I mean if Orochimaru was able to give Mitsuki Sage Mode, I don’t see why he didn’t give Mitsuki a dojutsu like Sharingan, Rinnengan, Byakugan, etc.
Shin were able to handle their Sharingan and MS without any problem, so I don’t see why Mitsuki wasn’t given one.
Shin were able to handle their Sharingan and MS without any problem, so I don’t see why Mitsuki wasn’t given one.