幻想万華鏡 ~The Memories of Phantasm~ a.k.a. Fantasy Kaleidoscope ~The Memories of Phantasm~
Given the beautiful animation, you would think that this is made by some officila animation studio. Then you would be wrong as this video is totally made by fans. This is really a true dedication to Touhou. Let’s hope that this production crew will manage to do a full Touhou movie/OVA.