I Developed a Sickly and Black Boy

(Written at 7.5) The sickly and dark prince from a neighboring country × the soft and heartthrob princess Shuang Jie 1v1 The little princess of Beizhu Kingdom picked up an unconscious boy. The young man is paranoid and sick, but he has a good skin. The little princess would blush every time she looked at the boy. Before turning black, Yan Yu was just a taciturn young man. "Ayu, why do you look so good-looking?" "Back to princess, no one can compare to you in terms of beauty." "Ayu, it's snowing, can you build a snowman for me?" "I am willing to serve the princess." "Ayu, I want to choose the prince-in-law." "The princess is unparalleled in her elegance, and the prince-in-law is destined to be a genius forever." After turning black, Yan Yu became paranoid and obsessed. "Ayao, can you obey me?" "Go back to the princess, I'm afraid I won't be able to do it." [Demining: 1 The male protagonist is reborn, and the female protagonist is responsible for the whole process of being as beautiful as a flower. The male protagonist had Bai Yueguang in his previous life, but he didn't know it was the female protagonist. 2. The male protagonist appears polite but is actually a crazy person who will take advantage of the female protagonist in the early stage. 3 If something happens, I will ask for leave in the comment area]