Mamorigatana no Uta: Mamorigatana no Ichimonji

Also known as: 守り刀のうた －守り刀の一文字－, Mamorikatana no Uta: Mamorikatana no Ichimonji, Poem of the Guardian Sword

by Mitsuru Yuuki, Keiko Sakano

The story takes place in the capital city Shinto Tokyou where humans and monsters live together. The protagonist Uta is bid by her grandmother to find the Makibara Clan, whose household staff were all dismissed recently by the landlord Rinnosuke. The city has also been plagued by series of disappearances involving people being spirited away. (Source: Anime News Network)