Despite Sata Sushi being pesco-vegetarian, and not vegan, I always have a terrific time at Sata Sushi. The vegan menu is very handy and original.
My favorite sushis (futomakis) are the Flocon (with coconut) and the Rouge (with mint). They also offer a special deal on the Grano (17 pieces, made vegan upon request). It's delicious.