 If you liked One Punch Man 2nd Season |  ...then you might like Tensei shitara Slime Datta Ken |
- Both anime have an overpowered main character who is laid back and knows about his power, both have a sense of justice and righteousness - Both anime have multiple comedy scenes and very memorable supporting characters. Both of them form an entourage of powerful friends who aid them in battle. - Both characters attract powerful enemies and hence both anime have mutiple fight scenes -Both anime have a power ranking system (SS Rank, A rank etc.) - However, unlike OPM, Rimuru's power grows steadily during the series whereas Saitama is OP from the start - Also, Slime has much more world building than OPM