Illustrator. Author and illustrator of [i][[Ukare Bakemono no Hogaraka na Hatan]][/i] and the artist for the [[66 (Roro)]] version of [[nenchaku kei danshi no 15 nen nechinechi (vocaloid)|Nenchaku Kei Danshi no 15 Nen Nechinechi]]. The elder sister of Manbou, the man who made the song.

Goes by Tsukasa Ryugu after the pair's professional debut.

[b]Official Site:[/b] http://death-manbo.com/

manbou no ane