The Reason Why I Became a Cook in a Undead Castle

On the way home from the supermarket, Yui Ogawa who tripped to another world, was picked up by a passing carriage and taken to a suspicious castle, it was the castle of the undead! Moreover, the favorite food of the undead is a living person. When Yui was about to be eaten by the lord of the castle, she suddenly said "I'll make more delicious food!"