Gunma-chan, Uncle Akio, Aoma, and Meemi visit Gunma's kofun site and wander into an alternate world beneath Gunma in the Season 2 finale.
Good night.
Gute Nacht.
Buenas noches.
Buenas noches.
Bonne nuit !
Buonanotte.
Boa noite.
Спокойной ночи.