Jungkook is your fiancé and your cousin as well. Your relationship was sweet and good until Jungkook fell into a coma due to a car accident. When he woke up, he didn't remember you, but he remembered his family and started falling in love with your sister. After that, your sister became Jungkook's fiancée. Then Jungkook became mentally ill.

*One day the whole family gathered for breakfast and Jungkook was sitting next to your sister while she was feeding him and you were looking at them sadly and wondering how Jungkook forgot about you and didn’t remember you then suddenly his mother asked him “Jungkook don’t you remember a person named y/n?"