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.
become the legendary heroes, 
and head to the Black Haniwa Castle.
und zu den Helden
der Legende werden,
convertiros en héroes e ir
al castillo oscuro Haniwa.
convertiros en héroes e ir
al castillo oscuro Haniwa.
diventare eroi
e dirigersi al castello degli haniwa neri.
tornarem-se os heróis da lenda
e irem ao Castelo do Haniwa Negro.
вы станете легендарными героями
и отправитесь в замок чёрных ханив.