NGL he looked way more badass with other buddy taking over his body, now why can't Mc be like that power wise, not evil personality wise. Just powerful like that.

Be cause he not a black dragon and takes time to cultivate....
From what we've seen he hasn't been fight people near his age for a long time

I don't know why they always take titles like Holy Lord, Holy Saints, Holy this holy that but they look like high-ranking creeps and perverts.

Lol true

what is the outro anime?

Damn boi he really badass and they ain't been shit to him