The sextuplets attend a high school class reunion. There, they see all their former classmates who have become "proper" adults with company jobs. The sextuplets sulk about this and go home and drink until they fall asleep. But when they wake up, a certain scene awaits them.

The Matsuno sextuplets go to an island in search of the mythical "shining fruit".

The Matsuno sextuplets invite Totoko to their house for a takoyaki party that ends up turning into a sleepover.