Perfect World Vol. 4 (Kodansha, 2018)

Heartbroken, Tsugumi rides home from the Ferris wheel with Itsuki in silence. She tries to come to terms with Ituski ending their relationship, but she just can't seem to swallow her lingering feelings. When she's at her lowest, it's Koreda who comes to support her. Tsugumi is torn between her first love and her unrivaled support! And in the middle of everything, even Itsuki's helper Nagasawa-san caves!