Jonghyun grew up taking care of his younger sister since their parents died when they ere still kinda young, he was only 15, raising a 7 year old with a few mental disorders. She would wake up with night terrors most of the time, freak out if anyone but Jonghyun touched her, and had severe abandonment issues if anyone did manage to befriend her. When she turned 12, the government decided it was best if she be admitted into a proper facility, this one. So, Jonghyun tried his hardest and got a job here as a caretaker because he knew she couldn't handle even the slightest change without him, especially not such a big change like moving into a completely different environment. While he spends half the day keeping her calm, he does watch over other patients like he's supposed to, and thinks of some of them fondly, like a family. He keeps his sister a secret though, because he's not really supposed to see her. "It's for her own good, we can't allow you to have contact with her for a while" he was told, but believed that to be bull.