Kim Sohyun have difficulties in expressing her feeling. People who didn't know her well would say she is rude and cold-hearted, but the truth is she's too embarrassed to show her felings, so she said everything in her mind bluntly. She even accidentally told her cousin Kai that she's in love with him. Her cousin lived in front of her house and they had a normal cousin relationship but everything changed after her cousin parents dead. He moved into Sohyun's house. He often stayed at her room. At first he seeked comfort in Sohyun, but then they grew closer...

​She can't continue being like this, she knows he's just using her...

For what?

Comfort. 

Companion.

Afraid of being alone.