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...
Ka pa pa.. run pa pa...
...كا با با... رون با با
Kappapa runpappa …
Kappappa, runpappa.
Kappappa, runpappa.
Des kappa… Tout partout.
Ka pa pa.. run pa pa...
Ka pa pa.. run pa pa...
Ка-па-па, рун-па-па.