|Romaji|| Futari Ichi Mizugi|
|Range||Short to Mid range|
|Manga Debut||Chapter 81|
Hipp Train: Two People One Swimsuit (二人一水着 (ヒップップ・トレイン), Futari Ichi Mizugi Hippuppu Torein; Funimation "Complete Ultimate Combination: Hip-Hip Train") is a technique used in Keijo.
This is a combination technique performed by Hikari Muromachi and Midori Morimoto, with the two fusing as fighters together. Hikari inserts herself inside Midori's swimsuit to combine their power. As such, they claim that they are no longer separate players, but one player who is able to perform Suruga's best chest and butt techniques. Their damage also increases twofold.