Mountain Witch's Cutlery (1) Meitantei Conan : Season 1 Episode 481

Agasa takes the Junior Detective League camping, they end up being stranded in the middle of the woods. They decide to ask for lodgings from a house owned by an elderly woman named Iwae Tanaka. At the same time, Akane Ooba and her two hosts, Raito Adachi and Fuuga Kahara, also request for lodging and Tanaka complies. That night, Mitch goes to the restroom but sees something horrifying causing him to run back to his room