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!
!انتظر
Warte!
¡Oh, espera!
¡Oye, espera!
Attends !
Aspetta!
Espera!
Стой!