I Picked Up a Dimension Traveler, What Should I Feed Them?

I am Iliyas, the greatest intellect and the balancer of the world, a dragon. After 1500 years, I descended to the human realm and picked up something fascinating. A human with mysterious black hair and black eyes! "You have to spit out the chicken bones you ate whole. You'll get hurt if you eat them like that. Here, spit it out." "......" "If you don't spit it out, I'll put my hand in your mouth myself." Kwon Yul, whom I began to raise as a pet human, Was fierce like a wild animal, but had a certain charm. So I took good care of him... "I've wanted to die ever since I came here." One day, Yul fell into an eternal sleep. Unable to accept his death, I revived Yul, and as a price, I was sup...