Senran Kagura Shinovi Master: Tokyo Youma-hen

Synopsis

Unaware of what happened to Asuka, Yumi and her Gessen squad receive a message inviting them to a spa resort. Meanwhile, Homura's Crimson squad come up against Miyabi and her Hebijo squad during a mission, during which both teams receive the same invitations. Accepting the invitations, the three squads go to the resort together and have a water gun fight in which they aim to make their opponents' swimsuits transparent, which ultimately ends in a tie. The girls are then confronted by Gekkou and Senkou, who announce that they are holding the Hanzo girls as hostages to force everyone to take part in a Shinobi Masters tournament. Afterwards, Yumi comes across Asuka, the only one not captured by the pair, whose sense of justice has been shattered by her defeat.

(Source: Wikipedia)