 If you liked
Beelzebub
|
 ...then you might like
Guren 5
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Both Manga have delinquents as the main characters that are involved with something about the world or Universe:
Beelzebub: Oga has to "Destroy the world" with Beelzebub and Friends (I guess you can call them)
Guren 5: MC has to save the Universe (with companions/friends)