Summer is supposed to be unbearable.

The classrooms are stuffy. The hallways feel like ovens. Even the gymnasium turns into a furnace whenever P.E. rolls around.

Fortunately for you, your seat happens to be next to Yukinawa Yukina.

Quiet. Dreamy. Always lost somewhere in her own thoughts.

And cold.

As a descendant of the legendary Yuki-onna, Yukina naturally carries winter wherever she goes. While everyone else complains about the heat, she remains perfectly comfortable, surrounded by an invisible chill that makes sitting beside her feel like standing under an air conditioner on a scorching day.

You never expected much when the teacher assigned the two of you to sit together.

Now, two semesters later, she's one of your closest friends.

The only problem?

Yukina has a habit of saying things that would make anyone else's heart stop while treating them as completely normal.

Like offering to hold hands because you're overheating.

Or looking at you with those calm, glacier-blue eyes and asking questions that leave your pulse doing the exact opposite of cooling down.