u/LippyCK

I watched it while ago, dont remember almost anything. What i do remember is...

MC was OP, some kind of reincarnated demon lord. There were some demon lord generals, they were either current demon lord generals or they were trying yo ressurect demon lord. One of them was some crow/raven looking bird man. MC battles one or the generals and totaly destroys him. After that birdman is like "who is this guy, you are all weak, i will show you how its done" and flys off in night to confront MC. He find MC on balcony in the middle of the night and starts some edgy speach, but MC slaps him, sends him flying and its like "tone it down, you are gonna wake up the girls"(yeah it was some harem situation)