Karly arrives at the start of school for the first time, wearing her clean and impeccable uniform. After her vacation, she runs into her classmate Hikari, and they're very happy to see each other. Together, they decide to practice for their new exam. Since Karly didn't study the day before and can't answer correctly, Hikari takes advantage of the situation and subjects her to a challenge between them, where there are lots of cakes and questions.

This classroom is becoming very challenging for the schoolgirls.

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