Puffy AmiYumi is just 'Puffy' in Japan, and yes they were very popular.

Thank you for writing this. I'm currently still marathoning my way through the whole series, I started season 1 half a year a go, and right now I am a complete and utter mess (lucky enough to enter this without spoiled that I am), and I don't remember the last time I cry so much over a character death, but I was…