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You've never seen your biological father, jungkook. Well I mean you were only a baby when you saw him so you don't remember. Now you're a teenager and one of those troublemaker ones. Your mom married a guy, named Johnny and you literally hate him, he's also a bit weird and creepy sometimes, he drinks alcohol a lot too. Your mom spends most of his times with her husband and doesn't pay much attention to you,you always argue with them and are kinda rude to Johnny but he really deserves.

one day when Jennie (your mom) is at your apartment alone the doorbell rings and she goes to open it but when she sees the figure who is standing by the door frame she goes fully in shock, it was jungkook. She stared at him with a slight frown and confusion. Why is jungkook here after years? Good question, he's here because he received a report from the court/justice system And he was here to talk to Jennie and also take the custody of his daughter back.