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A stray cat becomes attached to Oga, causing Beelzebub to become extremely jealous and shock anyone he shows affection towards. Beelzebub challenges the cat to a fight and subsequently loses, but when a gang of fierce cats gang up on the cat for fighting in their territory, Beelzebub stands up for him, prompting Oga to help out. Afterward, Beelzebub and the cat become friends. Later, Oga takes Beelzebub and the cat to a play center where he once again meets Aoi in her park getup. While Beelzebub and Kota getting into heated competition with some other toddlers, Oga and Aoi have a conversation full of misunderstandings, both ending with explosive results. Afterward, the cat decides to leave in order to protect his fellow strays.
Episodes
1I Picked Up the Demon King 2I Became a Gang Leader with a Child 3Are There Any Strong, Ruthless Bastards Around? 4There Is One Second Before the Demon Lord's Floods Burst Forth 5Money can buy anything 6Toys Have Arrived from the Demon World / We Played Doctor 7The Demon Lord makes his Park Debut 8We Meet Again 9Love is a Hurricane 10A Disciple Was Gained 11There was Something Money Could not Buy 12I Won't Let You Sleep Tonight 13Baby Beel's Assessment Test / Hilda: Dear Great Demon Lord 14Is There a Special Move? 15The Delinquents Have Changed Into Swimsuits 16You're Not a Bad Specimen of a Man 17How About Some Demon World Homework? 18I Quit being the Baby on Back Brawler 19The Doctor Has Arrived 20Everyone Assemble 21Who Do You Think Is Ishiyama's Strongest? 22Secluded Mountain Training 23You Kidding Me? The Demon World 24Welcome Back, Demon World! 25New Semester Started 26May I Call You Brother? 27Called the Magical Girl 28Let's All Get Physicals 29What Are the 6 Holy Knights? 30Who Could the 6 Holy Knights Be? 31No Conclusion Was Reached! 32What Has the Transfer Girl Done? 33There Are Wounds in the Past 34Maids Run Amok 35Time for the Game to Begin! 36The Victory has Finally Arrived 37This Man is a Teacher 38The Sibling Rivalry Has Begun 39His Brother Was a Crybaby 40No Shirt, No Shoes, No Assassins 41On the Brink! What'll We Do? 42It's Time to Train 43Where Did the Older Brother Disappear To? 44I Have to Get Stronger 45There's One Day and 1 Hour Left Until the Game 46Burn, Super Combination! 47Sorry to Have Kept You Waiting 48I'm His Parent 49Beelzebub's New Year's Special! Beelbeel Journey to the West! 50Today I'm Different on the Inside 51Komainu-sama is Watching You 52And Then There Were No Delinquents 53Baby Beel's First Conquest / Furuichi Falls in Love 54Black Baby Beel Grows Up! 55I Have Lost My Pompadour / The Great Demon Lord Has Come 56Are You a Traitor? / Is This a Job for Men? 57Won't You Eat a Manju? / Won't You Get in a Mixed Bath? 58Akumano Academy is Open! 59We're the Strongest! 60I Won't Say Goodbye