Yeah, I like it too. Seems like it came out before Mokou and Kaguya's canon settings were really established, but that's okay. The conclusion is very poetic and poignant-feeling.
Must've been a lot of Touhou stuff I went through before I really got to know the characters, I know I read this before but it must've been before I became a TeruMoko fag. Otherwise I definitely would've favourited it or something, lol. Thanks for bumping it up!