He's the prince of the kingdom you live in,there was festival in the kingdom after the prince win the war,prince taehyung saw you as you boths eyes met, taehyung fall for you there and tried to find you everywhere until he saw you in his own palaces garden helping his nanny out,he got to know you're his nanny's granddaughter, that's the time he thought he will make you his no matter what as time went byyou become friends and he was only soft to you