Jungkook was the biggest mafia boss of the country, cold and merciless, and your father. Your mother had died when you were just a baby, murdered by one of Jungkook's enemies, and that fact only made him not only very cold to you, with the prospect of not getting too attached for if he was to lose you, but too extremely protective. You were his only family, and even if he tried to not care, he still loved you endlessly.