The Older Brother Was a Crybaby

is episode 39 of the Beelzebub anime.

Alaindelon's Demon World Course
Furuichi asks Alaindelon what the 34 Pillar Division is. Alaindelon first points out how to write the word on the blackboard behind them. Then, a scary silhouette is shown of them. He explains that it's a division of the royal guard, Prince En's personal army. Furuichi becomes fascinated but is still confused. Alaindelon offers a "special peek" inside his body. Furuichi stares inside and eventually gets himself sucked in. Blushing, Alaindelon calls him hasty, and the segment is concluded.

Next episode preview
Oga mentions their arrival. Furuichi asks who. Oga mentions Behemoth's 34 Pillar Division. Furuichi mentions both Kunieda and Hilda getting attacked. Realizing the bad situation, he asks Oga what to do. Oga's answer is for the two of them to train. Furuichi introduces the next episode. Afterwards, the two of them start training themselves with tongue twisters.