Perfect World manga volume 4 features story and art by Rie Aruga.

Afraid that their relationship is only doing more harm to them than good, Itsuki decides to break up with Tsugumi. The breakup leaves Tsugumi reeling, and while she tries to come to terms with Itsuki ending their relationship, she just can’t seem to swallow her lingering feelings. When she’s at her lowest, Koreda comes to support her, and Tsugumi begins to see a side of Koreda she’s never seen before. Meanwhile, Itsuki begins to regret his decision and decides to tell Tsugumi his true feelings. But when a family emergency has Tsugumi moving back to Matsumoto, will Itsuki’s feelings reach her in time, or will it be too late?

Perfect World manga volume 5 features story and art by Rie Aruga.

After her breakup with Itsuki, Tsumugi leaves Tokyo for her childhood home in Matsumoto. She tries to look ahead in her relationship with Koreda and distance herself from her past relationship with Itsuki, but in spite of her best efforts, fate continues to bring the two of them together. While caring for her ailing father, Tsugumi meets Kaede, who uses a wheelchair, and Keigo, her boyfriend who wants to build her a barrier-free house. Itsuki seems like the perfect person for the job, but when he turns the offer down, can Tsugumi convince him otherwise?

Perfect World manga volume 6 features story and art by Rie Aruga.

After Itsuki declines Keigo’s request for him to build a barrier-free home for his partner Kaede, Tsugumi heads to Tokyo to try to convince Itsuki to change his mind. Moved by Tsugumi’s sincerity, Itsuki agrees to take on the job—and what’s more, comes up with a solution that would allow Keigo and Kaede to achieve both of their dreams. But when the job has Tsugumi and Itsuki seeing more of each other, and has Tsugumi struggling with her lingering feeling for Itsuki, what will it mean for their relationships with Koreda and Nagasawa?