Ep. 5: Rikka enfrenta la disolución tras un mal examen de matemáticas y depende de los sobornos de Yuuta para estudiar.

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After scoring a dreadfully low score on her maths test, Rikka is faced with her circle being disbanded if she fails her next one. Rikka tries to improve the circle's status by volunteering to clean the pool but, due to playing around, it backfires, with the math teacher deciding Rikka will need to match the class average to keep her circle. Yuuta attempts to help Rikka study, but she keeps getting distracted. After learning a bit about how lonely Rikka gets sometimes, Yuuta offers to come up with an e-mail address for Rikka should she pass her test, using various bribes to get her to study hard. After the math exam, Rikka ends up scoring relatively poorly, but manages to land just above the class average, so Yuuta awards her with a new e-mail address. (Source: Wikipedia)