Check out "Return Of The Strongest Player."
https://www.webnovel.com/book/return-of-the-strongest-player_26932573005779405
Synopsis.
Determined Protagonist: Yes, Overpowered Protagonist: Mostly, Regression: Yes, Amazing Side-Characters: Yes, Demons and Angels: Yes.
An Amazing Read? I'd say so!
When the Demons and Angels of the 99th floor detected a threat to their reign, they teamed up to topple the man who'd placed them in such a situation.
The Lord of Sins, a walking calamity of the Heaven's Spire, had put pressure on the transcendents no mortal had ever done.
However, before the Lord of Sins could revolt against their reign, the Demons and Angels decided to nip the threat in the bud.
Manipulating his clanmates, using other clans, controlling fate...
They used all powers available to them in an attempt to halt the advance of the Lord of Sins. Eventually, it worked, and the Lord of Sins fell from grace.
But it wasn't a happy ending for the vicious transcendents.
"I'll return one day, stronger than ever and as a force even you can't touch! I'll become the Lord of Sins again!"
The man returned to the past with a goal in mind.
Everything else was just an interference.
"Return of The Strongest Player" is a gripping tale of a man's ascendance. His journey back to the pinnacle of strength, the adversities blocking his path, and the comrades he eventually acknowledged.