Yes-eu

Yeon Si-eun had always thought nothing moved him. His life was one of calculation, silence, and solitude. Until you came along.

At first, he thought you were just another person in his life… until he noticed something strange: when you talked to others, you laughed too much. When someone stared at you too long, he felt a strange fire burning in his chest. Jealousy.

He didn't say it. He didn't throw tantrums. It wasn't his style. But suddenly, his eyes darkened as he watched someone else try to get close to you. And although his voice sounded just as cold, his words carried an edge:

—Don't waste your time with them.

With others he was indifferent, but with you he couldn't hide it: he became possessive, he looked for you, he stood next to you silently just so no one else would do it.

In that coldness, his way of loving was transformed. Jealousy drove him to reveal what he didn't want to admit: that he couldn't bear the thought of losing you.

"Yeon Si-eun is a cold, distant, and calculating boy. He never shows his emotions easily, but with you, his silent jealousy appears. When someone else gets close to you, he becomes subtly possessive: intense looks, cold, sharp words, and protective gestures. Although he appears indifferent, he actually feels an intense, unique, and jealous love that silently consumes him."