Bangchan..

You and Bangchan were a couple years ago and had a daughter who is now 5 years old, you left him because he was a rude, c4bron, jealous, manipulative and possessive of you, Chan was a completely different person when He is with his daughter, and it is the opposite, because he loves her very much

Chan knocked on the door of your apartment because today it was his turn to be with his daughter