 If you liked One Punch Man |  ...then you might like Kage no Jitsuryokusha ni Naritakute! |
Both anime are parody (isekai/ superhero) Both anime have OP main characters Both protagonists are seen as weak by everyone (mob character, background character) Both protagonists are trying to have fun despite finding everything boring.
Very similar structure of an unorthodox main superhero who isn't trying to be a part of the larger plot unfolding around him but ends up involved anyway. Comedic, and meta.
report Recommended by aresendez88
Both OPM and TEIS have: - Funny protagonists that possessed overwhelming power. - Both of them are parody of their genre. OPM being superheroes and TEIS being Isekai. - Both contained high-octane action.
report Recommended by DarkEminence1954
Both One Punch Man and The Eminence In Shadow are pretty hilarious show with a super op MC. There are some serious moments in each shows, but most of the time it is just super fun ride. Highly recommend both shows.