Haiiro no Iris

is a Japanese light novel series written by Hiroki Iwata, with illustrations by Toshiyuki Sato. The series began publication on March 10, 2004 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
"The future that I can't do anything about myself because I'm trapped in the past. That's me-- ."

"The City of Space-Time Madness" Tokyo. In this city, there are barrier blood relatives with "different sky eyes". Ao of Soushu, jet black of Shiki, and gold of Ing.

Three types of different sky eyes that open the door of another world.

Using that ability, the barrier relatives prevented the distortion of space-time in the world and erosion of another dimension.

And now, one of the strongest different-eyed people, Asagiri Kanade, is searching for her sister with her sister's daughter, Mirai, who has an unprecedented gray different-eyed eye. It was. However, when Kanade and the future returned to Tokyo, the world began to move toward ruin.