Ceres: Celestial Legend Vol. 3 (manga)

Suzumi

Suzumi, a prim and proper instructor of traditional Japanese dance, has a demure exterior but a confident, strong interior. She's also a descendent of a tennyo (celestial maiden). Her powers are nowhere near as powerful as Ceres' but Suzumi senses Aya is a kindred spirit and proves to be one of her most valuable allies. Suzumi takes Aya into her home, unwittingly putting herself in just as much danger as Aya!