The first few episodes is amazingly animated and very fun, and the anime keeps a steady quality until the german girl is introduced. Her character is uninspired and the rest of the anime drags and feels like they were running out of ideas.
The art direction and color use in this anime is astounding and colorful which definately helps make the anime more enjoyable, however it cant fix the boring copy pasted concepts that plague the latter half of the anime.
Despite the problems with the second half of the anime, the first half is a blast, making use of characters being put in absurd situation while its ideas are still fresh
All in all this anime gets a 6/10 because of its great first half followed a dragging uninspired second half.