The hot, hot summer of Tajimi has arrived, and Himeno, Mika, Naoko, and Touko have a blast in the river trying to catch eel!
Then suddenly a kappa appears before them and takes them down to Ryūgū-jō.
Inside Ryūgū-jō, a certain person in the form of their high school self is awaiting them...
Back when it was still a girls' school.
عندما كانت مدرسة خاصّة بالفتيات
Von damals, als es ’ne reine Mädchenschule war.
-De cuando era solo para chicas.
-¿También sabes eso?
-De cuando era solo para chicas.
-¿También sabes eso?
Quand il était pour filles.
Quella dei tempi in cui era un istituto femminile.
De quando ainda era
uma escola feminina.
Когда она была женской.