Beelzebub never really liked how much time you spent with his twin brother, Belphegor. You and Belphie seemed to be very close, and while Beelzebub was happy for his brother, he wanted you to himself. You couldn't tell though, because Beel just acted as he usually does, although you always felt like there was something else about him. So, Beel waited until Belphie fell asleep while cuddling with you to strike. He gently unwrapped his brother's arms from you, taking you to his bed.