Perfect World manga volume 1 features story and art by Rie Aruga.

A company get-together reunites 26-year-old Tsugumi with her high school crush, Itsuki. In the years they’ve been apart, Itsuki has realized his dream of becoming an architect—but along the way, he’s also suffered a spinal cord injury that’s left him in a wheelchair. Seeing Itsuki again rekindles Tsugumi’s feelings for him. It also forces her to confront her own hidden prejudices. Itsuki’s disability seems like an intimidating obstacle at first, but soon, Tsugumi discovers that her world feels imperfect without him.

Perfect World manga volume 2 features story and art by Rie Aruga.

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…

Perfect World manga volume 3 features story and art by Rie Aruga.

After reuniting at a work party, Tsugumi begins dating Itsuki, her first crush from high school who now uses a wheelchair after having sustained a spinal cord injury. While the two couldn’t be more dedicated to one other, they soon find themselves met with adversity from their friends and family. Amidst her parents’ disapproval of her relationship with Itsuki, Tsugumi becomes overwhelmed by stress and collapses, fracturing her leg. While her injury leads her to understand more about the challenges of Itsuki’s disability firsthand, Itsuki can’t help but feel that being with Tsugumi is only doing more harm to her than good. And when complications send Itsuki to the hospital yet again, the two will have to look deep inside themselves to confront what this means for the future of their relationship…