Violent delinquent Oga encounters a baby one day, which crawls onto his back and immediately forms an attachment to him. Though he doesn't know it yet, this baby is named Kaiser de Emperana Beelzebub IV, or "Baby Beel" for short—the son of the Demon Lord!

• Miyuki Sawashiro
• Katsuyuki Konishi
• Shizuka Itoh
• Takahiro Mizushima
• Aki Toyosaki
• Daisuke Hirakawa
• Daisuke Kishio
• Haruna Ikezawa