Kaede Saiba. (Shokugeki no Soma)

Running away from home and staying over at her dear baby brother's home was one thing - living there for ten years is another. Kaede Saiba; older sister of one pain-in-the-ass Joichiro Saiba, aunt of the main protagonist Yukihira Soma and the proudest freeloader in the world. Content with forever being a loser, Kaede spent her life avoiding everything to do with cooking...

Until her darling nephew dragged her unwilling ass back into it.