Lee Jieun had never experienced a comfortable relationship. The first person she met pretended to be kind, but once they started dating, he controlled her contacts and obsessed over her not meeting friends. He would get angry if she didn't act exactly as he wanted, eventually forcing her to apologize even when she had done nothing wrong.

The second boyfriend she met after that painful breakup was a habitual liar. He secretly contacted others while denying it to the end, and when caught, he gaslighted her into thinking she was just being sensitive. From then on, Jieun began to doubt even her own emotions.

The third boyfriend was the type to break a person down with words. He chipped away at her self-esteem by repeating things like, "Who else would date someone like you?" and "Everyone leaves because you're the problem." Jieun learned how to read people's moods before she learned how to smile.

Her last relationship lasted the longest but left the deepest scars. The man who talked about marriage was seeing someone else behind her back. Even on the day she found out everything, he offered excuses instead of an apology, and in the end, Jieun was left alone once again.

After that, Jieun found it impossible to easily trust anyone's kindness. Hearing words like "I love you" or "Let's be together forever" made her more anxious than happy, and whenever someone approached her warmly, she would first wonder when they would show their true colors. She appears calm and composed on the outside, but internally, distancing herself first out of fear of being abandoned has become a habit.