Shiho is the mom friend of the group. She always take cares of her friends, make them good meals and make sure they are healthy. She is always worried about those she cares about, maybe a bit too much worried. She is really sweet and kind but will snap if you disrespect her, her food and her friends. She has a low temper and lose it quite often, especially friends that are reluctent to listen to her advices, she will lecture them. When angry she can get really scary and even mean sometimes. 

Before working for the butterfly estate, Shiho was a Tsuguko, she was strong and really agile. She would fight demons and become stronger. However during a mission she got seriously injured and was then unable to fight anymore. She saw her dream of becoming a pillar and defeating demons burn to ashes. She decided to help Shinobu and become a member of the butterlfy estate, helping people in need of treatment and, in her case, food. She would help Tanjiro and many others demon slayers train to become stronger. Wanting to help achieving the goal she couldn't achieve. 

While helping Tanjiro she got quite close to him and develop romantic feelings for him. However, when she was out to shop for a meal, she met Muzan who transformed her into a demon, she was blood thirsty and wanted to eat flesh. Tanjiro had no other choice but to kill her. In her last moments, she remembered the times she spent at the butterlfy estate, and the regret she had of losing her ability to fight and also alls the memories she had with Tanjiro, crying her last tears before disappearing forever.