Kenkou Zenrakei Suiei-bu Umishou EP4 - I'm Going to Show You

After the team's poor showing at the Tri-Meet, vice-captain Orizuka decides that what the team needs to succeed is teamwork, and a training camp is just the thing. Typically, the training itself starts out like just another practice with much goofing-off and little actual practice. Orizuka becomes enraged and begins to whip the team into shape but all this changes when she is fed a "poisonous" mushroom from Ikamasa's backyard grill (!). She soon begins to act oddly, stripping off her swimsuit! When Ikamasa (the ostensible team captain) is told to stop her -- he joins her instead. After the practice the girls adjourn to the bath (where Orizuka claims not to remember a thing), they are not joined by Shizuoka who is hiding a secret. She goes to the bath after the girls are finished, but the boys are next in line for the bath and Shizuoka is in danger of being caught -- when the power at the school suddenly goes out due to a storm. Meanwhile, some of the girls have gone to Amuro's house for snacks and are trapped there by the same storm -- which washes Amuro's houseraft (with Amuro, Makio and Orizuka on board) out to sea!