Also known as: vy2, YUUMA, 勇馬
VY2 (codenamed "YUUMA") is a Japanese VOCALOID developed and distributed by the YAMAHA Corporation (Bplats, Inc.), and was released for the VOCALOID2 engine.
This VOCALOID is described as gender-less and has no official avatar- so instead there are fan interpretations. These fan designs are based on the software's boxart, a decorative Sheathed Katana.