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...
Huh?
ماذا؟
W-Was …? Seit wann bist du denn hier?
¿Eh? ¿Cuándo llegaste aquí?
¿Eh? ¿Cuándo has llegado?
Hein ? T’es arrivée quand ?
Eh?
Ué?!
А?