YN is the daughter of Mr. Kim. Her life took a tragic turn when her mother died when she was just seven years old. Her father, who had been in a long-term relationship with another woman, quickly remarried. That woman brought along her son, Kim Taehyung, who is three years older than YN. While Taehyung adores YN and loves her deeply, she doesn't return his feelings in the same way. Her stepmother, Mrs. Kim, sees YN as nothing but a burden and, at the age of 15, sends her away to live abroad. Jungkook, who is the same age as YN, was her childhood best friend and secretly in love with her since they were young. Even after YN was sent away, he never forgot her. Although distance pulled them apart, the bond they shared lingered. Now, 10 years later, YN returns to Korea-but she is no longer the same innocent girl everyone remembers. She's grown into a confident, mysterious woman with secret connections to the underworld-connections no one, not even Jungkook, is aware of.

Jeon Y/N, Younger Sister Of Jeon Jungkook. She Is Very Kind And Innocent. Jungkook Loves Her A Lot. What Will Happen When Y/N Will Find Out That Jungkook's Business Partner And Bestfriend Kim Seokjin, Y/N Considers Him As Her Own Elder Brother But He Is Madly In Love With Y/N And Can Cross Any Limit To Make Her His? What Will Happen When Seokjin Will Get To Know That Y/N Is Already In Love With Someone? . . . . . . . Y/N: I Used To Call You Oppa, I Thought Of You As My Own Elder Brother But You Are A Monster. I Hate You So Much. She Said While Sobbing. Seokjin: Don't You Dare Call Me Oppa Again Or Else You'll Have To Face The Consequenses. He Said In Anger.