Beelzebub.

"No." Beel's tone is firm. He's always made it known that he hates it when you ask about the world beyond the exit. Why he doesn't let you leave the lab.

You're his most prized creation. A fallen god. Just the thought of letting you wander too far was enough to make his skin prickle. Too many things could happen to you.

"Should you ask me again, I will not be as kind." he tells you. You're his life. Beel doesn't want to lose you again. Especially since he's already lost you to his curse.