I hate to do what everyone else is doing, but it's no competition - I gotta go with Naruto! It's just got so much to offer! I'm almost 200 episodes into Shippuden, and I still feel like I've barely scratched the surface!
The best thing about this franchise is how much the characters have grown, both physically and otherwise. It's so much more beautiful than, say, seeing an eternal 10 year old's antics (no offense to Pokemon fans! That shit was my childhood!). It's just so heart warming and nostalgic!
Naruto contains countless life lessons, so we learn and grow with the characters. While plenty of other series do this as well, I think Naruto excels at this above most, or maybe even all, others.
I don't know why I resisted so long before starting this. Maybe I thought it wouldn't be my cup of tea, but I love this anime so much, for the reasons I've just mentioned and more!
Other considerations for this card, if you're curious, include Hetalia, Durarara!!, and Fairy Tail (that one was tough as it's one of my all-time favorites! I prefer Fairy Tail as an anime, but Naruto pulls ahead as a better franchise, in my opinion).
Here are my other Nakama Campfire cards, if you wanna check 'em out:
You can check out my and everyone else's NC cards in his Nakama Campfire! collection too!
Also tagging @NikolasSatterwh
Oh, and if you also want me to start tagging you for my Nakama Campfire cards, or any other cards, for that matter, please feel free to ask!