Masaka!!

A black silhouette of a person walks forward in a brightly lit, colorful hallway with striped walls and a glowing doorway at the end. The scene cuts to a series of close-ups of different animated characters, each with a distinct style and expression, including a man with a stern face, a girl with green hair, a girl with blonde hair and red goggles, and a girl with white hair and green eyes, followed by a final shot of a character in a red robe from behind, moving against a cloudy sky.