DxD: Matsuda? - Chapter 23: Steam Bath Detectives?

Gao Yang was a military enthusiast, an ordinary one, who loved knives, guns, and adventure.In an accident, Gao Yang found himself in Africa, where he unfortunately experienced a plane crash. Although he miraculously survived, his life henceforth was one where he could only scrape by under the muzzle of guns, for he had become a mercenary.What heights could a military enthusiast reach in the international Mercenary World?Please, wait and see.

This is the story of a person who transmigrated into a world with a radically different worldview.

Riding out the apocalypse on a tropical island isn't exactly a vacation. When mana arrives on Earth, Coop finds himself isolated in paradise with only one real option to survive. He needs to claim a civilization shard and level up. Coop maximizes his chances by carefully selecting a class and committing to progression. He’ll need to grind thousands of monsters to compete on the system's leaderboards while upgrading his settlement to represent the factionless.

Her – a glutton without troubles or worries who crossed over and became a young fat chick with a deep vengefulness.