In this era, demons and monsters roam the streets at night. Humans and familiars work as partners who kill those monsters. Civil servant Fan Xiaotie and the strongest demon girl Linyu of the secret department...

Mayama Haruki and Himemiya Tsukiko have been childhood friends and neighbors for as long as they can remember, but after a girls-only meeting in fourth grade, Himemiya distanced herself from Mayama. Now in...