The boy Yotsuya saved in the Chinese restaurant, Torii Keita, turns out to be the fifth player. They're sent to the alternate world again, and after receiving the fifth quest, they head for Cortonel to track down some leads. There they find Kahvel, who is now a mother. The party is shocked to learn that 15 years have passed since their fourth quest, but that isn't the only thing that's changed in this world.
I mean, it's the girl at 
the top of the class...
...فهي الفتاة المعتلية لفصلها، بينما الآخر
Die Queen Bee …
Mientras una es
la más popular de la clase,
Mientras una es
la más popular de la clase,
Après tout, t’as la star de l’école…
Voglio dire, una è la prima in classifica...
Afinal, uma é a garota que
está no topo da turma...
Всё-таки одна — среди лучших в классе,