manbou_no_ane
Illustrator. Author and illustrator of Ukare Bakemono no Hogaraka na Hatan and the artist for the 66 (Roro) version of Nenchaku_Kei_Danshi_no_15_Nen_Nechinechi. The elder sister of Manbou, the man who made the song.
Official Site: http://death-manbo.com/