Beelzebub/Tear Jerker

For all its Funny, Awesome, and Heartwarming moments, there are still many times that pull on the heartstrings.

"Hilda:"
 * Unsurprisingly, this trope is initially parodied in Chapter 43.
 * It's played much, much straighter, however,

"Hilda:"
 * And again in Chapter 141, as

"En:"
 * breakdown at the end of the Akumano arc. While the scene is mostly Played for Laughs, it's still hard not to feel sorry for the little guy, especially if you've been abandoned before.

"Izou: "It's so frustrating...""
 * Baby Beel crying over his self-sacrifice with Oga in Episode 60.
 * In chapter 155, after his defeat, Izou Aiba covers his face, puts on a Broken Smile, and says this: