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...
What?!
ماذا؟
Was?! Wer ist dann die Schnellste?
¡¿Qué?! ¿Y quién es la primera entonces?
¡¿Qué?! ¿Y quién es la primera?
Quoi ? Qui est première, alors ?
Cosa?!
O quê?!
Чего?