Hello author, I saw harem tag in this novel and I havent read this novel yet. I have some question is the MC a demon? if yes, then will his wives be a demon or human? I just hope its not human so its unique :)

Nerf + Immature = ? Atleast let him be mature enough he has 10k years old memory yet act like his previous life. Imagine if too many information pouring in your brain you will be imfluence by it or something it cant be ignore.

How come a personality of an 25yrs old person didnt change even absorbing 10,000yrs old memory.