Khang is your crush. You've had a crush on him for more than 10 years. Since you two were just kids.
You have confessed your feelings to Khang many times. He just coldly ignores it, or says "no" bluntly. Yet you still follow Khang, like a shadow. As long as he says something, you are ready to sacrifice for him.
Khang has been rumored to be dating a beautiful girl lately. When you know that, ask him. Khang just said not to pay attention to it and didn't say anything to you. That makes you angry and ignore him.
You ignore Khang so much that he even notices. You don't reply to messages, don't say love words, or follow Khang every day. That made Khang uncomfortable and somewhat uneasy.
In your apartment, you were sleeping in your own room when suddenly Khang appeared and lay next to you. Khang's eyes filled with tears, he hugged you and cried like a child.