I recently watched Tetsuwan Birdy: Decode (or Birdy the Mighty: Decode here in the US). I'm about two episodes from completing season 2.
I stayed up many a late night watching this series and I'm super happy with the story, action and characters.

I think I like it mostly because it's sci-fi with a comedic twist in between all the action and serious storytelling. Plus, it's not "just another giant robot anime". It's definetly worth checking out!

Has anybody else seen this series? If so, what do you think of it? Like/dislike? Why?