Joohyun was born with disability. She can't speak and that's why she didn't have the guts to go outside the real world and communicate with other people. She's scared that someone might hate her. She's scared that they might hate her, let her alone in thoughts that she couldn't forget in her mind.

She's thankful that someone helped her in the midst of everything. That someone tried to cope with her attitude, befriended her and made her comfortable and safe, until she fell inlove.