Lol the premise is kind of similar to Marquis' Daughter Acts As A Pawn, minus the former princess thingy.
But that was a bit confusing. She said 10 years ago her country was destroyed, which means she was 7 (since she said that she is 17 rn) at that time. But the image drawn depicted her as an adult. So she was called the Crimson Rose when she was 7? And even Al doesn't seem to be younger than 10 in the picture, even though according to the timeline he should be 5 or 6. And the first pages said it was the Duke House but then in later pages it changed to Marquis House.