Touka

A girl that seeming fell from the sky as a shooting star. When Kazuto finds her, she has no memory of who she is. She only knows her name is Touka, and that she was there on an important mission. She has a sensation as if she is missing something above her head. She settles into a small village while she tries to get her bearings. Kazuto checks in on her to see how she is doing. Not knowing how to explain her relationship with Kazuto to the villagers, she decides to call him Goushuji-sama.

Even without most memories, she remembers that she is very clumsy, and that someone often helped her when she got into trouble.

Spoiler

When she meets Aisha, she regains most of her memories. Touka is in fact a Celestial from the Heavenly Realm. She has a special Oracle power that gives her information on the future. She came to the Dungeon because she had an oracle telling her that a great power was there that would greatly affect the future. Unfortunately, an accident occurred, and er Halo, that stabilized her powers was sent flying somewhere, causing her to lose her strength and memories.