Chidori Hitotsuya is a university student and close friend of protagonist Atsushi Ikuta. She facilitates his tutoring position with Arisa Kumagai. Chidori knows Atsushi harbors romantic feelings for her and understands his emotional distance results from her existing relationship. Yet her bond with this boyfriend deteriorates significantly over time. Simultaneously, she acknowledges her own long-held feelings for Atsushi. This awareness creates internal conflict as she grapples with resolving her romantic situation.