Servamp

Servamp (サーヴァンプ, SERVAMP) is a Shōnen manga written and illustrated by Strike TANAKA (田中ストライク, TANAKA Strike), and labeled with the genres action, comedy and supernatural. The series is serialized in Monthly Comic GENE since the year 2011 with seven volumes, six side-stories and three drama CDs to this date.

The story revolves around a 16-years old boy (15 at the beginning of the story) called Mahiru Shirota (城田真昼, Shirota Mahiru) who likes simple and dislikes difficult things. One day he picks up a stray, black cat he finds in the middle of the road and gives it the name Kuro (クロ, which literally translates into "black"). From this moment on a contract between the servamp Sleepy Ash and Mahiru is formed and Mahiru is being pulled into the Servamp war between the seven deadly Servamps and their eighth sibling Tsubaki.