Why does Jae Kyung want Song Yi dead? It largely has to do with this USB. Little does Song Yi know, but that USB has all the evidence she would need to put a definitive end to Jae Kyung’s reign of terror. She has the power, but she’s too oblivious to realize it. Song Yi’s oblivious nature, while endearing, can also be highly frustrating. She might have been safe if only she hadn’t opened her mouth around Jae Kyung. She sure has a knack for saying the exactly the wrong thing at the wrong time. Also, she might want to avoid all giant stuffed animals in the future. Evil Teddy Bear Thankfully she has Min Joon in her life to help separate normal teddy bears from the evil ones!