Drink Up This Bowl of Bone Broth

I, Saiki Kusuo, psychic, was summoned to another world as a hero. But the Demon King turned out to be a pile of bones. And the bones had a habit of ripping people's hearts out as soon as they showed up. Mom, let's have bone broth tomorrow. Oh! Apart from all these weird-looking creatures, the desserts here are really good... Also, get over it. Heroes and Demon Kings can't live together. (Saiki-style tsundere) It'd be such a shame if nobody could hear the Bone King's boyish inner voice. Oh ho ho!