Ishiyama High is home to a whole host of delinquents, including Oga, a legendary badass who's downright devilish. One day Oga finds a man floating down a river, after which the man splits open to reveal a baby inside – but it’s no ordinary baby! The cute tot is actually Beelzebub, the future king of the demons! And as Oga is as mean as they come, Beelzebub latches on to its newfound 'father', much to the other demons' dismay. Now, in addition to battling rival gangs and becoming the strongest delinquent around, Oga must buy diapers, comfort and carry around an annoying baby who's more of a devil than he is!
they are both very funny and share some awkward moments where you just laugh, and in the next second they are off to safe the world :)
They are definitely similar. They both use a lot of gag humor and slapstick. While they are primarily comedies, they both share similar action scenes in which the protagonist gets angry and has to save his friends or what have you.
Yukitaka has just left Tokyo, eager to transfer to Kisaragi High where he's been recruited to play baseball. However, upon entering his new apartment, the boy is met by a man with long blonde hair who claims to be… an alien?! After initially scoffing at the notion, Yukitaka discovers that the alien – Ouji – is for real, has amnesia and, what's worse, now wants to live with him in his apartment. The fact that scientists and mysterious guys in black suits are after Ouji becomes the least of Yukitaka's problems as his new guest turns out to be more than a handful to handle!
The humor in Level E is very similar to the type of humor you will get in Gintama. Level E features parody humor, just like Gintama. Both series enjoy epic trolling of their audience and characters as well. Both series are generally very funny. If you found one funny, chances are you'll find the other funny