Little Black Book Vs Blue Blood

all of a sudden, i traveled through time and space to be a little black book, bearing the mission to grant prince kang a baby, and only after that, could i travel back. it’s a journey to get him back on the road! but it’s technically difficult to help a delicate but handsome man learn how to flirt with the beauties. follow my lead, let’s set out on a magical time travel! 小皇书vs小皇叔; holy book and highness; tiểu hoàng thư và tiểu hoàng thúc; buku suci dan yang mulia