To the Hot Springs Town Ryuugajou Nanana no Maizoukin : Season 1 Episode 6

The Adventure Club has come to a hot springs town. In the hallway of their inn, Juugo sees Yukihime with a friend of hers, but she ignores him. That evening, Isshin shows everyone the layout of the nearby house that he has brought them to explore, and Tensai pinpoints the room that the ruins are in.