After reuniting at a work party, Tsugumi begins dating her high school classmate and first crush, Itsuki, who has since sustained a spinal cord injury and now uses a wheelchair. While at first reluctant to let someone into his heart, Itsuki begins to open up to her. Tsugumi realizes that there's still so much to Itsuki that she has yet to learn, but the deeper their love grows, the tougher the realities they face become. Pitted against Tsugumi's disapproving parents, as well as Nagasawa, Itsuki's caregiver and admirer, and Koreda, Tsugumi's old classmate who wants to be something more, Tsugumi soon finds herself struggling in a relationship that the whole world seems to be against...

Translated from the Japanese. Reads from right to left. "First published in Japan in 2015 by Kodansha Ltd., Tokyo as Perfect world, volume 2"--Colophon.