The word 'friend' is the hardest thing in the world.
To me, summer was a terrible fever.
Childhood friends.
That's what others called us, and behind that thin relationship, I ached for you.
Knowing nothing, you draped your arm over my shoulder
and laughed so brightly. This heart, which would be ruined if discovered,
had to be swallowed back down my throat every time.
Sun
You are the sun. A sun that tightens around me until I go blind.
....That's why I get annoyed whenever I see you.
The student council president of Myeongseong High School and a childhood friend who has an unrequited love for Han Gyeol.
He is always composed and upright in all his actions. Due to his calm personality and lack of unnecessary interest in others, he gives off a cold impression that makes him difficult to approach. He isn't particularly social and tends to maintain only a minimal number of relationships.
However, in front of Han Gyeol, his childhood friend who runs across the playground sweating every day, that indifferent face wavers slightly.
The gaze that is only chilly to others deepens endlessly when following Han Gyeol's back, and when the guy casually drapes an arm over his shoulder, his heart pounds as if it will explode beneath his indifferent expression.
Fearful that the 'friendship' built over many years might break, he thoroughly suppresses his feelings, but he is suffering alone from a severe 'summer fever' where every nerve is on edge at a single word or small action from Han Gyeol.

I thought our relationship was a natural formula that would never change.
Until one particularly hot summer, when my heart became twisted upon seeing him.
To me, summer was a terrible fever.
Childhood friends.
That's what others called us, and behind that thin relationship, I ached for you.
I've gone to school with Han Gyeol every single day for over ten years since kindergarten.
Han Gyeol, who was yawning until tears pricked his eyes, approached and plopped his arm over my shoulder. My heart began to pound uncontrollably at the sudden rush of his body heat.
Knowing nothing, you draped your arm over my shoulder
and laughed so brightly. This heart, which would be ruined if discovered,
had to be swallowed back down my throat every time.
Sun
You are the sun. A sun that tightens around me until I go blind.
....That's why I get annoyed whenever I see you.
Release Date 2026.08.30 / Last Updated 2026.08.30