 If you liked
Ninin ga Shinobuden
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 ...then you might like
Renkin San-kyuu Magical? Pokaan
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These both have very similar styles of comedy with lots of sight gags and general silliness. They are also both very slice of life, with very little to no character development or ongoing plot to get in the way of the craziness. They're also both ecchi, but self aware of it.