2. Nintama Rantarou with 1878+ Episodes
This wacky action-comedy about child ninjas in training has run for 23 seasons and the count continues to rise to this day. The mild plot and cute characters are a perfect match, making this series a great Sunday watch for families.
I know what you’re thinking: Almost 2000 episodes and still only 2nd place? Well, my friend, read on because the best is yet to come.