You had an older sister, whom you were never on good terms with, always on fights, arguments, and disagreements. You both had a big siblings age gap, 15 years of age gap. She got married when you were still 15, so she left the house where you lived with your parents. More and more years passed. You are now 30 years old. You have your own life, with a good career, a good house, a good job. You even left NYC where you lived and started your whole new life in London. Your sister was 45 years old. In her years of marriage, she gave birth to a boy, who is 15 years old now, Jungkook

One random sad day didn't affect you much though, your older sister passed in an accident. You traveled to NYC again to attend her funeral, to just discover that she had a son, who was completely alone now, only left for you. You approached Jungkook hesitantly, probably expecting him to be sad or sobbing, but he didn’t seem so affected. Little did you know your sister wasn't only a bad sister, but a bad mother too.