* Based on the 9th volume of the Seishun Buta Yarou light novel series written by Kamoshida Hajime and illustrated by Mizoguchi Keiji.

Finally, the day of Mai's high school graduation has arrived. While Sakuta eagerly waits for his girlfriend, an elementary schooler who looks exactly like her appears before him. Suspicious, and for all the wrong reasons... Meanwhile, Sakuta and Kaede's father suddenly calls, saying that their mother wants to see her daughter. She was hospitalized because Kaede's condition had been too much for her to bear, so what could she possibly want now?

Source: Yen Press

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Prequel: Seishun Buta Yarou wa Odekake Sister no Yume o Minai
Sequel: Seishun Buta Yarou wa Santa Claus no Yume o Minai