Akugyaku Seijo desuga, Aisuru Dannasama no Oyaku ni Tachitai desu. (To wa Ie, Kirawareteiru nodesuga)

Charlotte wakes up to find herself having lost her memories, and her power as a "Rarefied Saint" blocked off somehow, but she doesn't mind, because her husband and guardian Oswald, is amazingly handsome! However, it seems that in the past, Charlotte has tormented people with her cruel behavior, and because of that, Oswald hates her…? If that's the case, she will try her best to repair her reputation while hiding her amnesia! A suspenseful romantic comedy between a clumsy but genius magician and the formerly wicked saintess who adores him! (Source: Zero-Sum Online, translated)