The eternal night is barren, the other shore of Lycoris Lycoris.
The ancient castle hidden on the human continent glows faintly under the moonlight, and everyone knows that whether they are human, vampire or any other race - Duke Jiang Xun of the vampire family has three children, the eldest son is always quick and accurate; the second son has a high IQ, the best talent and ability; as for the third lady... She only helps her second brother chase his wife♡.
In a different world, a cold and self-possessed vampire attacks every day with a face that everyone praises as a five-million-dollar donkey × a sweet-tooth-loving, cute, angry and pouting girl who laughs happily.
Purpose: Using the blood contract of the blood clan as a bond, it tells the story of a cold and lonely vampire, and a lively and enthusiastic boy with a sweet tooth, who are drawn by fate to meet. Crossing the desolation of eternal night, breaking the racial barriers, as evidenced by the blood contract, each other is the only destination and salvation in the long years.