Naruto, Shijou Saikyou no Deshi Kenichi Recommendations
Same type of "leveling-up" occurs for the characters. Kenichi and Naruto are definitely similar in that there's martial arts, and both main characters start off basically sucking. Kenichi is much shorter though, so you'll be able to enjoy a feature filled show without all the fillers.
Both have a main-character who wants to become the strongest of all by defeating their enemies. Thanks to their friends they will come very far...
And if you want to laugh, this a good one too!
Both anime about to becoming strong and fighting.
Both fight for the justice and friendship, has the same anger type. They always be the strongest when someone close to them is in danger :)
Imo Naruto and Kenichi are very alike. They both strife to get stronger while using martial arts. They both have top level, weird, funny masters. Also the humor in both shows are very alike.
If you liked the comedy in Kenichi than Naruto should be the next thing to watch and vice versa.