Insp_Auth

Shisui's is light green or am I mistaken? Mc's is dark green close to brown.

Here is how MC's Mangekyo Sharingan looks like

Depends on what exactly you mean by "harem". It won't really be a harem filled with love and all that, however, he will most likely fool around with more than 1 woman. Just don't expect this ff to be super romance-oriented, I might add a little bit of romance but I won't focus on it or make Mc be like "I need to protect my loved ones no matter what!" After all, mc is a twisted human who has "unstable" mental health.