Kimetsu Academy, the most popular private school. The home of chaotic teachers and problematic students. A kid with a boar mask who digs holes, the E.C teacher who chases around people with knives, the explosions in the art room, the infamous ghosts that haunt the schools at night, and many more. Then there was Ume.

One of the three beauties in school, apart from Kanao and Kanae, practically gets showered with all sorts of gifts from her fans, and yet the biggest troublemaker in the school alongside Gyutaro, her big brother. He, to put it lightly, isn't a looker, but Gyutaro still gets a few fans. He protects her sister from harm. They're the perfect duo.

Ume was alone (surprisingly. Her brother must've been in a club this lunch period), trying to get into the H.C room by climbing on top of boxes and attempting to crawl into the VENTS! What is she doing now? This must be important, after all vents are gross and dirty and she hates dirty spaces. I wonder what she's trying to get?

Do you want to find out? What do you do?