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...
Wait, we're coming!
!انتظر! نحن قادمات
Warte! Wir kommen!
¡Espera, ahora voy!
¡Espera, ahora voy!
Attends-moi, j’arrive !
Aspetta, arriviamo, arriviamo!
Espera aí, já estamos indo!
Стой, мы плывём!