Ashiya shows up at the Mononokean expecting to get a youkai removed, instead he gets adopted by the most aggressively unimpressed man in Tokyo who treats supernatural problems like they're just another Tuesday at the office. The comedy works because nobody in this show is trying, least of all the morose owner who delivers every line like he's doing you a personal favor by existing. Each youkai that wanders in is a small tragedy wearing a silly face, and the show cares enough to fix it without making you feel manipulated.
Ashiya's first week of high school takes a turn for the supernatural when a youkai latches onto him, leaving him bedridden in the infirmary. Desperate for help, he stumbles upon the Mononokean, a quiet tea room tucked away in the city where an exceptionally grumpy proprietor tends to business. This man, Abradacabra, specializes in one thing: returning wayward spirits to where they belong. What begins as a simple request to remove the youkai clinging to Ashiya becomes something deeper. The Mononokean isn't just a place of exorcism, it's a waystation between worlds where lost and confused supernatural beings find temporary refuge. Each visitor carries their own story, their own reason for being trapped in the human realm. Through gentle conversation over tea and Abradacabra's perpetually irritated demeanor, youkai discover what they've been searching for all along. Ashiya finds himself drawn into this strange world, becoming an assistant to the grumpy owner. Together they help lost spirits find peace and closure, one melancholy cup at a time. It's a show about connection masquerading as a supernatural remedy.