Touhou Ibara Kasen: Wild and Horned Hermit.
Manga
Touhou Ibara Kasen: Wild and Horned Hermit is a manga based on the Touhou Project, serialized in Ichijinsha's Febri from Vol. 01 to Vol. 55. A guest version also appeared in the May–June 2011 issues of Monthly Comic Rex, and one-shots have run there irregularly since the May 2012 issue. It was written by ZUN and drawn by Aya Azuma.
Translated from the Japanese Wikipedia article, available under CC BY-SA 4.0. Translated and shortened by ManhWatch AI; may contain errors.