For 27 years, Himari Shibasaki and Kazumi Hojo have been best friends since college, until a drunken confession shifts the dynamic between them. A physical arrangement sparked by loneliness soon becomes something more as they question their feelings. Kazumi, burdened by childhood trauma, secretly loves Himari, believing she rescued him from despair. Meanwhile, Himari hides her own past grief behind a carefully constructed facade. As they move beyond a casual relationship towards commitment, a jealous coworker and a dangerous stalker from Himari’s past threaten their fragile happiness.