Female MC is super strong, and she's in a shitty marriage with a cheater. She has scars on her back and her cheating husband cannot stand looking at them. She meets a duke (who is the ml) and he eventually becomes her "partner" that she can be with. Cheater is obviously upset about the situation. Plus the art style was cute
What is the nameeeee

There are two that i'm trying to remember the name of - one is a shoujo romance where everyone in the family has special abilities and the mc is the only one that doesn't have any. (She does have a special ability....it was luck), she eventually ends up getting kicked out of the family and living with the ml's family.
The other one was a reverse harem??? But it was kind of weird because the male lead's were her step brothers??? And the dude she ends up with is her step dad????? Whatever happened to that??
In the first one she has like water based powers and she is like the reincarnation of a powerful mage?? Im wondering bc I know one that is like that
The second one sounds like "someone possessed my body" or something like that