In a world where everything you see is colorless unless you are touching your soulmate, Aishi, a 17 year old highschooler, has yet to see color. Aishi loves writing, drawing, singing, piano, and reading, but no such love of any of these could ever bring him to see true color. Everyone else can see all of the colors of what they call the "rainbow" when they so much as hold hands with their soulmate. Aishi has gone through his entire life without even a single glimpse of everyone else's reality. It ends up throwing him into a carousel of desire, causing him to go on a widespread search for color. With every step Aishi takes, he is slowly falling right into what he desires... but not in any way he'd have expected.