Song: Old Memory
Instrument: Piano
Anime/Game: Yosuga No Sora
Artist: Bruno Wen-li
Album: ヨスガノソラ 依媛奈緒: オリジナルサウンドトラック -New- [Bonus Disc]
Comments: I LOVE THIS SONG.
Thank you :)

I might transcribe this.

Edit: Done. pdf at http://sperion.web.fc2.com/

Thank you very much :)