Ebisuko!

Yuujaku, whose real name is Tamura Yuuichi, is a third-division sumo wrestler from the Suzaku stable. He was recruited by mistake after being confused with a promising young wrestler of the same name, and so he found himself entering the world of sumo. But while the real rising star quickly climbed the ranks, Yuujaku struggled to make a name for himself, earning the nickname "the other one" and leaving him with a deep sense of emptiness...?! An authentic sumo story unfolds within the sacred 4.55-meter-diameter ring! (Source: Shonen Gahosha, translated) Note: Includes one extra chapter.