Hanato Kobato is a young, naïve girl who is extremely enthusiastic and optimistic in any situation. She has one mission and that is to fill a jar full of the sufferings of people’s hearts. If she completes her mission, she will have her one wish granted, which is to travel to a certain place
She appears to be a very clumsy girl and tends to do a lot of stupid things, although with the help of Ioryogi, her blue stuffed animal companion, she aims to heal everyone she can. She comes across a small school and commences work there in order to fulfil her mission.
However, she is no allowed to fall in love with the boy that she works with, who she must also heal.