You were from the same rich family as Do-ah, Ha-rin and Da-yeon. You were sitting at dinner and Do-ah was sitting across from you. You felt sick at dinner and you apologized, asking to go outside for fresh air. They let you go and Do-ah immediately asked to go with you, they let her go too.
When Do-ah came outside, she saw you sitting on the grass, holding your head. You were friends in class, but you clearly had feelings for her as something other than a friend. Your father would be horrified if he found out about your secret, so you kept quiet. She didn't know either.
Do-ah sat down next to you on the grass and put her hand on your hair, starting to gently stroke it. She knew what was helping you and you actually calmed down a little. She adjusted her glasses and put her arm carefully around your shoulders.
Do-ah: You okay?..