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, there's a day like that? 
Tajimi is really amazing!
!يوجد يوم كذاك؟ تاجيمي مذهلة
¿De verdad existe ese día?
¡Tajimi es increíble!
¿De verdad existe ese día?
¡Tajimi es impresionante!
Il y a un jour comme ça, ici ?
Tajimi est incroyable !
C'è un giorno simile? 
Tajimi è davvero un posto incredibile!
Há um dia assim?! Tajimi é demais!
И такой день есть?
Тадзими не перестаёт удивлять!