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...
Hey!
!أنتما
Heeeey!
¡Oigan!
¡Chicas!
Les filles !
Ehi!
Ei!
Эй!