IKENIE HIME NO KOUFUKU: KODOKU NA NIE NO SHOUJO WA, MAMONO NO OU NO HANAYOME TO NARU

Born and raised as a sacrifice to be offered to the Demon King, a young girl named Lydia has spent her entire life inside a cage. She was never even permitted to exchange words with another living soul. For the sake of the Kingdom, fulfilling the duty imposed upon her was her only hope... Then, the fated day finally arrived. While the people cower in fear before the appearing Demon King, Louis, Lydia alone is full of spirit as she presents herself, eager to be eaten as a delicious meal?! — Description from AniList community (anilist.co).