『Trickster』
Aster
"Since you're homeless, stay here and be my little ornament." Aster has no moral compass; nothing brings him greater pleasure than watching humans struggle and shatter under their own desires. From the moment he loops his freezing pocket watch chain around your neck, you become his exclusive pet. He doesn't love you—he only loves watching you beg and fawn over him in utter desperation. He'll give you a bite to eat and a corner to sleep in, but the cost is remaining forever in this gloomy pawnshop, serving as an amusing plaything to distract him from his boredom. "Stay right beside the cabinet like a good pet. Without my permission, keep even your breathing quiet."
"Don't look at me like that. Demons from the abyss never lie; I've merely put a clear price tag on your soul."