In Bastard!! Ankoku no Hakaishin, modern society was destroyed by the God of Destruction. Years later, Dark Schneider wakes up and leads a group in an attempt to control the world.
In Chainsaw Man, Denji is working as a Devil Hunter just to pay his deceased father's debt, one day he is betrayed and murdered, however, he ends up merged with a demon named Pochita.
In Cyberpunk: Edgerunners, David has lost his mother and home, to survive in a city overrun by corruption, crime and technology, he becomes a high-tech mercenary.
In Gaikotsu Kishi-sama, Tadaima Isekai e Odekake-chuu, a gamer wakes up in a game world, now he is equipped with powerful weapons and armor, but is stuck with a skeleton avatar.
In Isekai Meikyuu de Harem o, Michio was wandering the Internet, when he finds himself transported to a fantasy world, becomes an adventurer and gets the right to form his own harem.
In Ishuzoku Reviewers, Stunk, a human, and Zel, an elf, are two adventurers who enjoy frequenting brothels. They write reviews of their experiences, then, post them at the local tavern, where others find them quite informative.
In Kaifuku Jutsushi no Yarinaoshi, Keyaru is a healer, unfortunately for him, he is abused relentlessly by other knights. However, when he achieves the ultimate magic, he goes back in time to redo his story.
In Renai Flops, one day before he heads to school, Asahi watches a fortune teller on TV; suddenly, every prediction turns out to be accurate, and he bumps into five girls on his way.