Hogwarts: Chill, I'm Not That Riddle - Chapter 428: A Big Quidditch Game

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

God plucked one of his creations from his first Earth and gave him a second chance in another one of his Earths...surprise it is in DxD! Now reincarnated as a perverted side character how will our poor protagonist handle his new identity? Well he probably wont make the choices you will want him to, that's for sure!

The tale of Oliver.
An orphan boy from a Mine, in 19th century Europe, filled with Magic.

Thrown into the chaotic “god Verse,” Ryan Stone awakens a power beyond imagining: the SSS-Tier “Ultimate Infinite Extraction System.” While others struggle with mundane abilities, Ryan can deconstruct anything, from monster corpses to ancient artifacts, even the fading signatures of defeated foes, assimilating their essence to achieve limitless growth.From a desperate survivor in a starting outpost, Ryan’s unique talent propels him to unimaginable heights. He outwits cunning rivals, crushes powerful challengers in Sector-wide scrambles, and seizes control of a god Weaver, becoming a Sector Lord. But as he unravels the secrets of the lost Precursors and the cataclysmic Reality Schism that shattered their universe, his system evolves, granting him the power not just to extract, but to impose his will on reality itself.