This is probably one of the worst manga I've ever had the misfortune of reading. The premise is trash (build a harem of beautiful girls he can fuck and impregnate, seriously?), the story itself is trash, characters one-dimensional and boring, mc ridiculously overpowered, the poor attempts at humor are cringe.
This manga just has no redeeming qualities whatsoever. I wouldn't waste my time with this if I were you, but if this kinda stuff interests you then go for it.