Hitsuji no KiHitsuji no Ki.

Hitsuji no Ki (Japanese: 羊の木; lit. 'Sheep Tree') is a Japanese manga series written by Tatsuhiko Yamagami and illustrated by Mikio Igarashi. Published by Kodansha, it was serialized in the seinen manga magazine Evening from June 2011 to April 2014, with its chapters compiled into five tankōbon volumes. A live-action film adaptation directed by Daihachi Yoshida was released in Japan in February 2018.