Sun-Ken Rock

Ken Kitano starts as a typical high school delinquent until his crush Yumin Yoshizawa rejects him and moves to South Korea to join the police force. Desperate to follow her, Ken drops out of school and travels across the ocean, only to arrive stranded without money or legal status. His situation changes when he stops a group of thugs from beating an elderly man. This act of violence attracts the attention of Tae-Soo Park, a local crime boss who sees potential in Ken's fighting spirit.

Park offers Ken a job within his syndicate instead of the law enforcement career Ken originally sought. The story follows Ken's rise through the brutal ranks of the Korean underworld, where he learns to survive street politics and master intense martial arts. While the initial motivation is romantic, the narrative evolves into a mature drama about loyalty, power dynamics, and moral ambiguity within organized crime.

Boichi created this seinen series for Shōnen Gahosha's Young King magazine between April 2006 and February 2016. The original run spanned 134 chapters collected into 25 volumes. For years, Western fans relied on digital platforms like JManga and Crunchyroll to read the series since no official print release existed in North America. In October 2025, Kodama Tales announced they had licensed the manga for physical distribution.

The publisher began releasing a new "Perfect Edition" in Spring 2026 to make the long-running saga more accessible. These omnibus-style volumes combine multiple chapters per book, condensing the extensive story for new readers. Boichi, known globally for his work on Dr. Stone, showcases his signature detailed art style here with visceral fight choreography that remains a highlight for critics and fans alike. [edit]