Video 「東方アレンジVocal」556mm - knowledge!

title：knowledge!
artist：きりん (Kirin)
vocal：あひる (ahiru)
lyrics：海兎 (Kaito)
circle：556mm (556ミリメートル)
album：conquest -making parfect girls-
website：http://556mm.blog136.fc2.com/
released：May 10, 2015 / Reitaisai 12
illust：masaru.jp
http://safebooru.org/index.php?page=post&s=view&id=1481947

Better make that Kirin playlist, not sure when tho.

＋ ORIGINAL：ヴワル魔法図書館 / Voile, the Magic Library
[東方紅魔郷 ～ the Embodiment of Scarlet Devil Stage 4 theme]