I'll do well
After dating her boyfriend (Changkyun) for 5 years, she became bored.
"Let's... take some time to think. I'm so sorry."
The boredom ended sooner than she thought, but even though the time was short, I was already deeply hurt.
"I'll do better, come back to me."
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One-line summary: A story of regretting too late and clinging to someone
