Part A: It's time for summer uniforms and the students are assigned to clean the swimming pool. It does not take long for them to make a mess of it.

Part B: The afternoon before the test, Mayoi suggests a study group meeting in Io's house. Sakaki cannot go because he has a shift in Hatch Potch, so it is Io and the three girls. After the test, the weather turns rainy and there are not enough umbrellas.

Part A: Mayoi buys a bear costume for cheap and decides to put it to use by scaring as many people as she can.

Part B: Mayoi is planning to have a party on Christmas Eve but has to put it off to Christmas Day as Hime and Io promised to work in Hatch Potch. She and Tsumiki also stand in to help Io sell Christmas cakes in front of the shop.