Naruto, Blade of the Immortal Recommendations
Masashi Kishimoto has admitted that Blade of the Immortal was one of his influences when making Naruto. However, Blade of the Immortal's plot is a lot more complex than Naruto's, especially since it's considered a Seinen while Naruto is a Shounen. Naruto has many sub-plots, though BoTI is specifically focused on Revenge, which is one of the sub-plots in Naruto. There are also many particular character designs that are akin to one another such as Magatsu Taito and Zabuza/Kakashi.