Zero parted from the Gluttony domain without tears. Beelzebub was glad to know that Zero no longer felt the guilt that came with the trouble he caused in the abyss. After all, the next Demon Lord he was visiting didn't take kindly to the young doctor's contributions in ways more than one. He only wished that Zero wouldn't buckle under all that pressure. Mammon had explicitly told him that should Zero choose to bother him again, he will make the teenager work his debt off. Beelzebub had to work for his loan and that was an experience that he never wanted to go through again. Office jobs and administration was a whole new level of torture, Beelzebub never wanted to go near the subject called Math ever again.