Can anyone recommend manhwas like this? Where the MC is overly nice and OP/smart?

try this one https://www.mangago.zone/read-manga/isekai_yakkyoku/

or this underrated one but treating animals instead https://www.mangago.zone/read-manga/wild_life/

I never thought yakkyoku is still ongoing. I loved the anime. Thank you to you and the person who asked. I found one of my favorite anime (づ￣ ³￣)づ

https://www.mangago.zone/read-manga/last_karte_houjuuigakusha_touma_kenshou_no_kioku/

Is also pretty good but it has a different vibe