MAROOMS presents KNOCK OUT.55 takes place on July 20, 2025, at Korakuen Hall in Tokyo, Japan. This kickboxing event features 10 bouts under KNOCK OUT-RED and KNOCK OUT-BLACK rules. Key fights include Taimu Hisai vs. Romisan Tiger Reon, Yoshiro Tsuzaki vs. Phawanmai, Tsukasa Oki vs. Mun Meikia, and Reito Bravely vs. Ei Mamurinphutong. The preliminary card includes MOMO vs. Miho and NANA vs. Zarina Islamova.

Cast: Taimu Hisai, Romueesan Tiger Reon, Yoshiro Tsuzaki, Farwanmai Senchai Gym, Tsukasa Kobayashi, Moon Meikia