MangaDex

Demon's Worm Toxin

The mysterious spell in the continent— Worm Toxin. A demon imitated it and made a box of hell. By letting 100 sorcerers kill each other, the strongest soldier will be born. However, only two survived, a man and a woman. Seems normal at first but this comedy oneshot is about pissing off the demon as both of them flirt in the box of hell.