Its truly one of the worst isekai I've ever watched and I've watched almost evey Japanese isekai out there. The mc is really overpowered and when I say really i mean it. Half way of the season he defeats the second most powerful demon in the demon army after the demon lord and he keeps getting stronger and stronger, so strong in fact that by the end of the season he has godly powers.
Also the mc keeps pissing me off because he always complains that he is cheating and becoming stronger but he keeps using those cheats. His whole self is fake. In the real world he is a fat ugly guy that doesn't want to shower but when he gets in the other world he becomes handsome and op.
At last the harem part of the anime is really annoying. Every single girl he meets falls in love with him, because of course he is handsome and op, but hes reaction isn't at all what you'll expect from a virgin 16-17old boy.
He agrees instantly to have 2+ girlfriends when he was asked.
I know many will not agree with my opinion but i hated it, also it's so unoriginal it copy's arifureta and isekai wa smartphone to tomo ni.