From becoming the Lord of Yokai

A red‑haired half‑demon boy with horns accidentally becomes the leader of a hundred yokai. He travels between different worlds with them, facing battles and strange crises along the way. Even so, he keeps complaining that being a yokai lord has no benefits and insists his real dream is to become a great onmyoji. His yokai followers are constantly exasperated, because in their eyes he is already the biggest “monster boss” of them all. — Description from novelcodex.org