Summer vacation! Seiji, Guri, Akane and Yuzu have invited Akua to go with them to the beach. Akane tries to get Akua to go swimming with her in attempt to get closer to Seiji's little sister, but Akua gives her the cold shoulder. Pouting at her brother and his harem Akua goes to swim by herself but a dark shadow looms beneath her. Meanwhile, summer also means tests of courage! Guri suddenly invites Seiji, Akane, and Yuzu to the school after dark for a test of courage but her real motives are to pair another young couple who have asked for her help. Seiji thinks something isn't quite right about the pair though...
I'm sure it would hurt them if they found out 
I heard all this without their knowledge.
Es würde die beiden kränken, wenn ich
von jemand anderem ihre Geschichte höre.
Seguro que les dolería si supieran
que escuché esto sin ellas.
Seguro que les dolería saber
que escuché esto sin ellas.
Ça les blesserait
qu’on parle de ça dans leur dos.
Sono sicuro che ci rimarrebbero male
se ne sentissi parlare quando loro non ci sono.
Acho que elas ficariam chateadas 
se eu ouvisse isso tudo sem elas.
Думаю, они обидятся, когда поймут, 
что я узнал об этом без их ведома.