Aooni The Horror of Blueberry Onsen

The once-popular hot spring inn known for its "beauty-enhancing hot spring" is now a ruin. There was a rumor that it was haunted. Hiroshi, Takeshi, Mika, and Takuro visit the abandoned hot spring inn to record “Mika Channel” and encounter a “suspicious man” and “Ai” there... What is the Blueberry Hot Spring found in the abandoned inn, and what awaits them in its deepest depths...? Can Hiroshi and the others escape safely?