https://en.wikipedia.org/wiki/07-Ghost
07-Ghost (セブンゴースト, Sebun Gōsuto) is a Japanese manga series written and illustrated by Yuki Amemiya and Yukino Ichihara. It is set in a fantasy world with different laws, kingdoms, gods and magic. It was serialized in Monthly Comic Zero Sum, a josei manga magazine published monthly by Ichijinsha.Seventeen bound volumes have been released by the publisher.