It's finally summer and so the swimming sessions begins. Kanako is very excited because at the swimming lessons she can see all the girls in their swimsuits. But during the fact that she daydreams and father Kanae interrupting (even once being out for the whole day because of food poisoning by way of eating raw liver), she collapses very often and because of that has to stay in bed. But she can go to the pool after all before the summer break begins and there she tries to reveal the fact that Mariya is a boy. However, it is revealed that Mariya got his twin sister, Shizu, to take his place.
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