After Summoning the Demon King

Xie Su got an old book from a friend who was a professor of classical literature. He opened it and tried every summoning circle in the book. When he reached the last page...

The Demon King answered the summons.

He was unbearably arrogant. "Human, are you the one who summoned me?"

Xie Su kept a straight face. "Yes."

The Demon King hovered in the air, looking down at him. "What is your wish?"

Xie Su replied coolly, "I'm bored. I summoned you for fun."

"You can leave now."

The Demon King: "...No. No one can reject me."

"Is it that no one can reject you, or that you can't find your way home?"

The Demon King: "..."

A rich, chaos-loving, third-rate paranormal streamer who loves courting death, receiving × an outrageously arrogant Demon King who can't out-arrogant the receiver, attacking

Theme: Haven't decided