Sumi

Sumi is a kind of youkai that’s born in a house on the verge of being abandoned. If the landlord strongly wishes for it, youkai like Sumi are born. Soon after being born in the house, Sumi was called with "come to Monobeno and protect Sawai Tooru". After being called, she realized that she must exist to protect Tooru and Tooru’s house. So she set out to Monobeno and during the road there, that’s where she met Hishaku. It’s something that she only knows now but, she was a very young and powerless youkai, meaning going outside was very dangerous, she would become an easy meal for other youkais. When she was in danger, Hishaku stepped in and helped her. After hearing what she wanted to do, Hishaku tried to stop her. Because Monobeno apparently has a barrier of sorts. Low level youkai like her would easily be blown away if they tried to approach it. However Sumi refused to stop and tried to go to Monobeno regardless. At that point Hishaku decided to follow Sumi on her journey.