Soobin and Yeonjun were forced to work together in a university project. Yeonjun was withdrawn and afraid to trust people.

"Question, when you said you don't like being touched, did you mean that you can't stand it at all? Or that you don't trust someone enough to let them touch you?"

Soobin asked looking at Yeonjun who was writing notes. Soobin lived without parents and survived, and Yeonjun with but they were abusive.