Ninjai: The Little Ninja
This is a really good, well put together saga.
It's up to chapter 12 now...
It's about a little ninja kid who is in search for the answers he seeks, but who and what he encounters in his journey is equally puzzling. The animation is done in strict 2D in the beginning, but then moves towards an anime style. It's a very touching tale of companionship, life and death, and revenge.