Special chapter first released in the <i>Ring ni Kakero Real</i> databook and then rereleased in the Oh! Super Jump magazine to conmemorate the release of the anime's second season.

Takane Kiku and Takane Ryuji are the children of a legendary world contender boxer. Kiku, the daughter seems to have inherited her father's boxing sense and tries to teach Ryuji to become a world contender. However, Ryuji hates boxing and gets picked on. After Kiku and Ryuji leave their hometown for Tokyo, Ryuji eventually learns to discover a passion for boxing after an encounter with a boxing prodigy, Kenzaki Jun. This will eventually lead him to learn crazy moves and out of this world opponents to become one of Japan's top junior boxers.<br><br>
(Source: Anime News Network)

Tags