| Manbou no Ane (マンボウの姉) is an illustrator who won in the Vocaloid Festa (VocaFes) contest for fan visualization of VY2 along with Rimiko, who won for VY1's. She also illustrated the boxart for VY1v3.
As the name suggest, she is Ieno Urade Manbouga Shinderu-P's older sister. Her first work appearance in Nico Nico Douga is an illustration for the song "A Sunfish is Dead at the Back of my House," and eventually, she created fully-illustrated PVs for her brother's original songs. She also provides PVs for utaites such as Sekihan and Soraru and actively contributes in official Vocaloid Artbooks and CD cover illustrations.
She now uses Tsukasa Ryugu (竜宮ツカサ) as her artist name since the release of the major debut album "My Colorful Confuse" of Ieno Urade Manbouga Shinderu-P (who also renamed himself as Takahashi You).
Manbou no Ane's VY2 character 66(ロロ/Roro) became very well-known in the fandom due to the popularity of her PVs which featured the said VY2 image. Her most famous work is "Kuwagata ni Chop Shitara Timeslip Shita" (Time-Warped After Chopping My Stag Beetle) featuring Gumi which currently has over a million views.