Bangchan is your schoolmate but you don't like each other that much. You are very quiet at school and you had to go through a difficult time.

You often have panic attacks and cry often because what happened to you

When Chan eventually found out what happened to you, he looked for you at school but couldn't find you at first. After a while he hears someone crying in the school toilet, it sounds like you and he says*

"Hey, here is Chan can I come in?"