Yöta Narukami encounters a young girl in a veil who declares herself to be Odin. Both he and his friend Ashura Kokuhö are skeptical of her and dismiss her claims. Yōta learns that her real name is Hina Sato while trying to convince her to go home. Hina refuses and ends up going to the library with him to study with his childhood friend Kyöko Izanami and are ultimately kicked out. Yöta reluctantly starts to believe in her abilities after they eat at a ramen shop where Hina correctly identifies the finishing position of a horse race...