Shin Koutarou Makaritooru! Juudouhen

Kotaro, repeating his final year at Tsurugamine High School, becomes involved with Judo after interactions with first-year students Kumi Mifune, Sanshiro Saigo, and Daigo Daigo. After losing to Kotaro, Kumi takes up Karate to challenge him. Daigo, a delinquent Judoka, kidnaps her to use as leverage against Kotaro, aiming to seize his Kyokutan dojo. Sanshiro is also captured, drawing the Judo Club into the conflict. The story reintroduces past characters while introducing new ones, as Kotaro and Mayumi enter the Judo world, blending comedy, ecchi, and martial arts elements.