Oiwa

Oiwa (お岩) is the innkeeper of Senboukyou, a hotsprings bathhouse where the lingering dead get help to move on. She runs the inn with a spirit named Rei. She is also an old acquaintance of Otose. Oiwa lost her parents at a very young age. That's when she started seeing lingering spirits. She had an one sided love to Terada Tatsugorou, this caused a rivalry between her and Otose but she loses to Otose.