
After losing his parents in a plane crash at the age of eight, I-Jin Yu is stranded in a foreign country and forced to survive as a child mercenary. Ten years later, he finally returns to Korea and reunites with his family, hoping to live a peaceful life for the first time. But normalcy proves elusive. Enrolling in high school with only one year left before graduation, I-Jin discovers that school is its own kind of battlefield. Armed with combat experience, tactical awareness, and a soldier’s mindset, he must navigate bullies, violence, and social hierarchies while protecting the life he fought so hard to reclaim.
Mercenary Enrollment succeeds by embracing its absurdity with confidence. Watching a hardened battlefield survivor apply military logic to school conflicts is endlessly entertaining, yet the series never forgets the trauma behind I-Jin’s skills.
The action is clean and impactful, but the heart of the story lies in I-Jin’s gradual reconnection with family and civilian life. His stoicism contrasts well with teenage chaos, making both the humor and violence land effectively.
This webtoon is ideal for readers who enjoy school action with an overpowered but grounded protagonist. Mercenary Enrollment is simple, polished, and consistently fun — a modern classic of the genre.