Mei and Yuzu study together at their house so Yuzu can place in the top 100 on their exams and keep their grandfather happy. However, after their kiss of mutual yearning, Yuzu can't concentrate at all.  Steeling her resolve she asks Mei what that kiss meant only to get coldly brushed off. Feeling depressed, Yuzu heads to an arcade with Harumi, but her mind's distracted. There, she reunites with her childhood friend, the second year middle schooler, Mizusawa Matsuri.
What will you do in the future 
if you two sisters are in love?
Wie stellst du dir die Zukunft zweier
Schwestern vor, die sich lieben?
¿Qué futuro tiene una pareja
de hermanas enamoradas?
¿Qué futuro tiene una pareja
de hermanas enamoradas?
Vous allez faire comment, plus tard,
vu que vous êtes sœurs ?
Una storia d'amore tra sorelle...
O que vai ser do futuro se vocês duas,
irmãs, se apaixonarem?
Что в будущем выйдет
из романа двух сестёр?