Is Gensou Mangekyou: The Memories of Phantasm hentai?

OVA · 2011 · 20 episodes · PG-13 - Teens 13 or older

Fantasy

The series addresses events from Perfect Cherry Blossom, Embodiment of Scarlet Devil, Phantasmagoria of Flower View, Mountain of Faith and Subterranean Animism. It also briefly delves into Cirno's story from Touhou Hisoutensoku. (Source: Touhou Wiki)