The Archduke's Adopted Saint [Official]

The Archduke's Adopted Saint [Official] summary: I was forced to live in captivity for the rest of my life because I happened to be aware of the fact that I was a saint. I was truly a 'real' saint, but that didn’t matter, because there was already a designated saint in the temple. When I died from all the abuse I endured, I was sent back to a time before all those previous events in my life had happened. After fifteen regressions, I was exhausted. I prayed, "I don't want anything to do with this, so please just let me die." And at the moment when I thought could finally be able to die, someone said, "How about being my daughter?" …That monstrous grand duke adopted me. "I want to quit. I don't want to live being exploited again." Despite having the powers of a saint, she had to live her entire life in captivity—all for the sake of the fake saint who was anointed in secret. Unable to endure the torture any longer, she died alone and returned back in time. Daina, who chose a different path at the end of her forced repeated regressions, was adopted by the Grand Duke in a twist of fate… "As the sole daughter of the Teresia family, I will make it so that you have everything." Now that she has a new name and understands the importance of family, Daina decides to exact revenge so she can no longer be used by the temple. Original Webtoon: Daum, KakaoPage