Shibasaki Himari (27) is a cheerful and straightforward woman who works at a PR company. Despite her bright outward appearance, she has a strong sex drive, and a history of breakups caused by sexual incompatibility has left her with lingering emotional scars.
One day, as more and more of her friends get married, Himari begins to feel anxious about her own future. As usual, she vents her frustrations over drinks to Hōjō Kazumi, her best friend since college and now also her coworker. Unlike Himari, Kazumi has shown no interest in finding a long-term partner and seems completely unconcerned about it. However, when Himari says she wants to meet someone she is truly compatible with, Kazumi suddenly suggests, “Why don’t you try it with me?”
Surprised by this unexpected proposal from someone who had always seemed to keep a certain distance between them, Himari is conflicted. Yet despite knowing they are best friends, the two end up crossing that line. As a result, their relationship, once built on complete honesty and friendship, begins to change.
They could always be honest with each other as friends. They thought friendship was enough. But burdened by their respective pasts, neither had been able to take the next step. Now, as they move beyond the boundaries of friendship, they find themselves caught between friendship and love in this sweet yet risky romance.
