【戯言シリーズ】でBad ∞ End ∞ Nightハロウィン【西尾維新】

Halloween-themed parody of the Bad ∞ End ∞ Night vocaloid video, with characters from Nisio Isin’s Zaregoto series and Ningen series.
Original upload of this video : http://www.nicovideo.jp/watch/sm22114659