I don't know about what other's think, but I think it is pretty good. I don't really see any signs of harem but more closer to empire building. Though it's moving to an empire building theme, it's not overly "UGH this shit again" and actually intriguing. I like the MC, he makes his crazy OP-ness...
This chapter had more refreshing "Fuck you I'm strong now and I'll beat your ass" mood than most revenge manga I have read. If his dad was the one he beat it would have been on par with Shield bro
She really should just join the party, it's for their own safety. Sorry bella, you should deal with the uncomfortableness for the good of your beloved.