I wouldn't mind a harem fanfic. though there is a requirement. he should balance his romance and action. Yes... perfectly balanced. As all things should be.
( not sure If that's right)
Small harem: Nyx, Diana, Raven(rachel roth).
If I were the MC I would be pissed at his mom (but he may have been calm because he has a very strong mentality).
Idc about harem or not I would recommend you rewrite the first two chapters and make them work better. You scuffed his response after 5000 years of imprisonment. Also, I reckon his willpower would be immense after 5000 years of constant pain and emptiness.
