Aku no Taizai: Akujiki Musume Conchita

The second book in the series focuses on Banica Conchita, a woman who once enjoyed only the finest cuisine but now craves increasingly bizarre and disturbing dishes daily. Her palace is sealed, with no food entering or leaving. When her fifteenth personal chef requests a short break, she becomes enraged and consumes him. As her food supply dwindles, she eats her butler and maid. Eventually, with nothing left, she eats herself, a secret that remains unknown to others.