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 wonder why Akane-tan 
likes a guy as boring as you.
Wie konnte sich Akane nur in
so ’nen langweiligen Typen verknallen?
¿Qué es lo que ve Akane-tan
en un chico aburrido como tú?
¿Qué es lo que ve Akane-tan
en un chico aburrido como tú?
Pourquoi Akane aime-t-elle
un mec aussi ennuyeux ?
Chissà perché ad Akane-tan piace
uno così poco interessante come te.
Como a Akane-tan foi gostar 
de um cara sem graça como você?
Не пойму, за что Аканэ полюбила 
такого скучного парня, как ты.