 If you liked
Arakawa Under the Bridge
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 ...then you might like
JoJo no Kimyou na Bouken Part 4: Diamond wa Kudakenai
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I know it seems rather bizarre, but the fourth season of JJBA, at least the first episodes of it, and AuB are pretty similar since they both are episodic, present a quirky cast of character, have a bright color scheme and have a more complex plot developing underneath the episodic adventures.