Kawana Tsugumi works for an interior design company. She goes to a drinking party at a client's architectural office and happens to meet her first love. He's more handsome than ever and it isn't until he's leaving that she realizes something has changed: Ayukawa is in a wheelchair. [From MU]
Perfect World is a completed manga by Aruga Rie, first published in 2014. It blends psychological, romance, drama and slice of life. You can read all 26 available chapters of Perfect World online for free on MangaPulse; the newest is Chapter 26, added 2018-07-03. The series is finished, so you can read it from start to end in one go.