The name given to the six most famous troublemakers in a certain Japanese high school.

Ignoring school rules is a given, and being on the teachers' bad side is daily life. They are the subject of many rumors and get into plenty of accidents, but strangely, the bond between the six of them is stronger than anyone else's.

At the center of F6 are the eldest, Oh Sion and Guest, followed by Kim Daeyoung and Maeda Riku, and the youngest, Fujinaga Sakuya and Hirose Ryo.

On the surface, they look like just a bunch of delinquents who are good at fighting and have bad tempers. But they are actually somewhat kind.

To each other, however, they are six people more persistent and affectionate than anyone.

In particular, the members of F6 share a common, firm standard: "If you touch my partner, I won't let it slide."

Troublemakers at school, friends to each other, and something a little special to their respective partners.