Studying under Orochimaru, the Evil Scientist of Hidden Leaf Village naruto

thanks for the invite, I'm currently in Konoha, having just become a disciple of Orochimaru.
'So, the evolution of the Sharingan from one tomoe to two and then three, is it a genetic mutation or something else?'
Looking at the test subject in front of him, Kenichi Yumigami revealed a look full of curiosity.
'...I always feel that this disciple's gaze towards me is somewhat off,' Orochimaru thought, holding the research report submitted by Kenichi Yumigami on 'The Impact of Soul Transference on the Body,' with a displeased expression on his face.