Aooni The Blue Monster

Aooni The Blue Monster is a horror-comedy anime that takes place in a typical high school where rumors of monsters and supernatural events spread quickly. One such story involves an abandoned mansion on the outskirts of town, where supposedly, a blue monster named Ao Oni resides. Hiroshi and his friends Mika, Takeshi, and Takurou decide to investigate the mansion, which they see as a test of courage. They face numerous challenges, including puzzles and Ao Oni's relentless attacks, leading to various frustrating endings.