Original Manga: [Shounen Sirius](https://shonen-sirius.com/c/kyuketsuouji.html) (directed from ARTEMIS by sirius) The vampire prince and the sacrificial bride Meirin An is born into a prestigious family, but after losing both of her parents, her home gets taken over by a branch family, she faces mistreatment from them, and they use the presence of her sickly young brother to ensure her compliance. The branch family’s daughter, Shuusetsu, takes Meirin’s place and becomes engaged to the Third Prince, Tenga Rokuou. However, Tenga’s true identity turns out to be that of…a despised and feared vampire?! What awaits the ill fated young girl is the devotion of a complicated vampire with secrets of his own??! A royal court fantasy that begins with a contract marriage!

Princess Eris is executed for the attempted poisoning of her sister. However, she realizes that she has been transported back in time to six months before her execution and begins to capture her captor to avoid death! But then Krawis, the Prime Minister's aide who used to be her executioner, turns out to be her escort...? A twisted princess's fantasy about remaking her life!

Original Webtoon https://ebookjapan.yahoo.co.jp/stories/124436/