Omamori HimariOmamori Himari.

Omamori Himari (おまもりひまり; "Protective Charm Himari"), also known as OmaHima (おまひま) for short, is a Japanese manga series written and illustrated by Milan Matra. The story revolves around Yuto Amakawa, an orphan who, on his sixteenth birthday, meets Himari, a cat spirit samurai girl who has sworn an oath to protect Yuto from the various monsters and demons that are out to kill him. Omamori Himari ran in Fujimi Shobo's Monthly Dragon Age from June 2006 to September 2013, and twelve tankōbon volumes were published between February 7, 2007, and November 9, 2013.