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.
Who are you people?!
Wer seid ihr?!
¿Quiénes sois?
¿Quiénes sois?
Qui êtes-vous, au juste ?
Si può sapere chi siete?!
Quem são vocês?
Вы кто такие?