Sun-Ken Rock

Sun-Ken Rock (Japanese: サンケンロック Hepburn: Sanken Rokku) is a Japanese manga series written and illustrated by Boichi. The plot tells the story of Ken, a high school delinquent turned down by the girl he loved, Yumin, who promptly left Japan to become a police officer in Korea. Yearning to see the girl he loved, Ken dropped out of high school to travel to Korea and become an officer just like Yumin.

Although Ken has new dreams of leaving behind his life of violence and become a police officer like Yumin, Ken gets roped into gang life once more. The gang leader Tae-Soo Park has noticed his strength and immediately forces him to join his gang. What will happen to Ken, and his hopeful relationship with Yumin, who hates gangs?