I guess
MC takes good care of harem,treats them well and helps them grow. Harem has development and is not thrown away into background
NO ntr, but if mc takes other peoples wives, gf etc that is fine.
MC should be male.
MC can be ruthless as long as towards his own people (harem, family etc) he...
I was looking for good r18+ with similar genres as these below which I have read
Profane Prince of Domination (cultivation + good 18+ )
Immortal Only accepts Female Disciples (cultivation + good 18+ + good story building)
Naked Sword art (cultivation + good 18+ + good story building )
Villain...