Look, we all know why you clicked this story.
That title is quite concerning, isn't it? After all, why would any man ever try to make his wife, his romantic partner, look like a blood relative, least of all his sister? Even just the idea of it is shudder-inducing.
But the truth is he's not trying to actualize some sort of sick, secret fantasy — he's decided his sister looks better than his wife, so he's taken it upon himself to help her...well, catch up.