Genikasuri (げにかすり) is a seinen boxing manga by Toshio Sako — the acclaimed creator of Usogui and Batuque — that follows former professional boxer Ryo Harima, who awakens from a two-year vegetative state only to discover his career is finished, his father is dead, and his gym has betrayed him. Fueled by rage and a hunger for justice, he reinvents himself not as a fighter, but as a boxing promoter, determined to conquer the sport from its darkest corners.

What sets Genikasuri apart from traditional boxing manga is its unflinching focus on the psychological, financial, and criminal underbelly of combat sports. Rather than celebrating ring technique, it dives into themes of manipulation, revenge, and moral ambiguity — making it a compelling read for fans of action, drama, crime, and martial arts storytelling. Serialized in Shueisha's Weekly Young Jump, it carries the sharp, high-stakes tension that defines Sako's signature style.

With 36 chapters available and a story that rewards every twist, Genikasuri is essential reading for fans of dark sports drama. Read all chapters free online in high-quality English scans and experience one of the most unique takes on the boxing genre in modern manga.