Kumagawa's "Naked Apron Alliance" declares itself independent of the fight between Zenkichi and Medaka, but the leaders of the other student clubs have their own agenda as well, so Kumagawa proposes an odd card game to help break the tension.
Also notable for the inclusion of the one-shot "Good Loser Kumagawa," set before "Medaka Box" where Kumagawa is in a different school as he looks for someone that can help him defeat Anshin'in's influence. However, he discovers that the entire school might have already been corrupted by another Abnormal.
- 125. "What is a Win?" (勝ちとはなんだ？ Kachi to wa Nanda??)
- 126. "What’s Important in Someone’s Heart is" (人の心に大切なのは Hito no Kokoro ni Taisetsu na no wa?)
- 127. "That’s Why, Next Year, Medaka-chan Will" (だからめだかちゃんには Dakara Medaka-chan ni wa?)
- 128. "Unlike Justice Which Must Prevail" (正義と違って必ずしも Seigi to Chigatte Kanarazushi mo?)
- 129. "For That Reason This Game Is Most Definitely..." (ゆえにこのゲーム間違いなく Yue ni Kono Gēmu Machigai naku?)
- 130. "I Want Them to Have Fun" (楽しんで欲しいじゃん Tanoshinde Hoshī jan?)
- 131. "You Can Set A Trap" (罠を張ればいい Wana o Hareba Ii?)
- Special Chapter: "Good Loser Kumagawa" (グッドルーザー球磨川 Guddo Rūzā Kumagawa?)