As the summer vacation draws closer, the students begin swimming for physical education, though Mizuho has to fake being on a menstrual cycle to get out of it. When Takako notices him skipping out on swimming, she has the false pretense that Mizuho can't swim though is told yet another lie that Mizuho is afraid of water. Mariya and Takako get in a fight afterwards and end up in a swimming contest as many other students watch and cheer on.
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