Yujeong has a “hot” constitution—so during sex she overheats, and it’s never quite as satisfying as she wants. Eventually, it even leads to a breakup with her boyfriend.
Then one day, at a high school reunion, she runs into her longtime childhood friend, Hanseo. Unlike Yujeong, Hanseo has a “cold” constitution.

A small touch between them sparks a sudden tension… and before they know it, they end up spending the night together.

…But what happens when their temperatures—and their feelings—start to collide?

Original Webtoon