A short story about a fallen star created by a demi-god, which was lost long ago in the realm of Asteria. Aesir sets out on a journey to retrieve it, but unbeknownst to him, the artefact has already found an unlikely master. An ordinary girl, Mio, soon finds herself in an unfamiliar world filled with demons and magic. And those who seek to obtain the artefact for their own gain!