Ruirui Senki累々戦記; Ruirui Senki (Pre-serialization); Руируи Сенки: Запись войны; Shadow Eliminators

Kasane are spirits who latch onto the shadows of people's hearts. But as long as Yayoi and Aoba are around, evil spirits won't be hurting any students at the school! Beautiful art and occult action! The door to the unknown has now been opened...