Personal Info:  Musician working under Label YG Entertainment. Leader Singer of Sweet Stones. She was a bright and active girl before the accident. Since then she lost her confidence when her parents died. That’s why she’s always shy when she talks to her sunbae and unknown people too. That’s why she’s weak sometimes. She survived though thanks to music. Now she has almost mentally recover from the accident, but still have so many cameras around her, makes her uncomfortable, since she still hasn’t defeat her demons. The only member of her family remained is her brother.Since when she was little, her mother always told her that the korean music industry was tougher than the other music industry in the world, especially with the sasaeng fans bothering the idols. And that concern transferred to her brother, that’s why he checks every now and then Yumi’s life in korea, calling her, visiting her personally at times at YG Building.