K.O. Sen
- Alternative Name:
- K.O Sen; K.O. Sen; Kosen
- Status:
- Ongoing
- Categories:
- Martial Arts, Shounen, Sports,
- Type :
- Japanese
- Author:
- Murase Katsutoshi
- Artist:
- -
- Share
Saint Tobishima, high school student who inherited red hair his late father and an incredibly strong body, fails in all classes and cannot finish high school, because he spends all his time, making stupid tricks. His mother and grandmother are tired of his reckless behavior, so on the summer holidays they sent him to the gym Kickboxing coach Sakuravada, the main one who straightened the Father Sen many years ago.