After accidentally transmigrating during a vacation, high school student Allen became a mercenary in another world. With his Mercenary System, he can take the world by storm, and his teammates are his closest friends. The action never lets up, and his strength keeps soaring!
A mercenary's principles: Never kill the old, the weak, women, or children, and never kill anyone you take a liking to. The old, weak, women, and children means elderly people who can’t act for themselves, people who’d break a bone just by sneezing, and children who haven’t learned to walk yet!
