Jingu Yu Yuese de Ni

When the prince was on the verge of death, he saw not only the moon in the sky, but also a vampire with a beautiful face. The human prince, who was saved by the vampire, decided to repay his kindness. Little did the vampire expect there would be a day he would be involved with a human! A warm smile suddenly appeared in the endless life of the vampire, and the loneliness of being imprisoned began to change from the day they met~ (Source: Kuaikan, translated) Note: Includes two extra chapters.