Even Though I'm a Cruel Saint, I Want to Be Helpful to My Beloved Husband

When Charlotte wakes up, she has amnesia. Her power as a "rare saint" is blocked, but that's no big deal, because her husband, Osvald, is too good-looking...! However, it seems that in the past, Charlotte has tormented people with her cruel behavior, and because of that, he hates her...?
If that is the case, I will try my best to hide the fact that I have amnesia and be of service!
A handsome and heart-warming love fantasy between the master's most favorite evil saint and a clumsy genius sorceress!