KONOSUBAAAA

Two anime characters, a boy in a green and black tracksuit and a girl in a red outfit, react with wide-eyed fear as they peer through a dark, arched doorway into a dimly lit chamber. The scene cuts to a title card for "Kono Subarashii Sekai ni Shukufuku wo!" featuring chibi versions of the characters, then returns to the boy alone, cautiously leaning over a railing in a long, shadowy stone corridor.