Have you seen Arifureta yet? Rather go watch that before this.
This feels like a watered down Arifureta.

Highshool students get sent to another world to be heroes. Except one who ends up alone in a high level monster area where he somehow survives and becomes increasingly OP. (Sounds familiar??)
Voice actors are pretty great except for the main character, Seiichi, his VA choice just didn't sound right.

The annoying part is the ease that he goes through to keep becoming more powerful. It takes any excitement out of any possible combat scenes. Tiny spoiler - He starts off at level 1 but somehow takes a hit from a Level 120 monster AND kills it in 1 attack!! That theme of his wins are similar throughout.

The bonds between him and his harem are also formed so stupidly it will leave you pretty baffled at how they became so strong.

All in all its just a Meh Okay anime has some laughs. Watch if you really need a filler anime to keep you going. (show less)