The demon goddess is the maid of the demon king. The demon king tells the girl that he will not let the demon lord go unless she gives him five donuts. He tells her that if she kills him, then she will become a monster and that she still needs to live on for her parents. He says that if they let the bug die, they will automatically terminate the pact. The girl tells him that her father was demon and her mother was human. She says that the previous demon lord wanted to save her parents, but he was late. The spirit heart is a symbol of human protection.