
If you're looking for manga similar to Naruto: Special Extra Chapter - After The Last, you might like these titles.
Naruto Gaiden: Michita Tsuki ga Terasu Michi will tell the story of Mitsuki, one of Boruto's teammates.
Rakudai Ninja Rantarou is about a boy who wishes to become a chou-ichiryou-ninja (aka, the number one ninja). There is only one problem: he keeps failing. Together with his friends, they encounter mishap after mishap as they seek to eventually graduate from the first grade.
In the Hidden Leaf village of Konohagakure, there’s a hot-blooded ninja in town! Rock Lee is an energetic boy, whose complete and utter lack of talent in using ninjutsu techniques has given him an unstoppable belief in hard work and self-determination. Driven by his admiration for his teacher, Guy, Lee trains day and night to become the strongest ninja despite his inability at the most basic ninjustu. But even outside of his missions, whether he’s trying to beat his rival, or attempting to confess to the girl he likes, Lee stampedes through life at full-throttle never letting anything slow him down.
Hibiki and Tomoe Kazema are two sisters attending an ordinary high school, but unbeknown to their teachers and fellow students, they are members of a hidden group of ninjas. Their mission is to use their special powers to exterminate the akuma that are plaguing the world. This is made difficult by the fact that their enemies can possess corrupted humans who eventually turn into new akuma. Despite being faced with an ever growing army, the two are determined to prevail as "The two flowers that will slice through the darkness." The only question that remains is will they succeed against such overwhelming odds?
Meet Igazukin, the littlest ninja of the Iga clan! Though a student of the ninja arts, Igazukin would much rather pick flowers than pick up a throwing star, but her talent soon catches the attention of the dashing ninja, Kotaro Fuma. He comes to Igazukin with an ultimatum - join his band of ninjas or else! Can Igazukin fend off the thieves, bandits and rival ninjas that plague her training, or is she destined to wield nothing more deadly than a bouquet of flowers?
While out on the road, a young feudal lord named Chiyozuru stumbles across a girl laying unconscious in a stream named Henpukumaru and offers her a place to stay. Soon after her arrival, one of the young lord’s retainers, Gen’ichi, discovers that Henpukumaru is in truth an member of a ninja assassin group known as the Tekken who fled when she decided that she couldn’t kill any more. Having convinced him that her violent past lay firmly behind her, Henpukumaru begins to live a quiet life at the mansion. But when Choyozuru’s life becomes endangered, with the tentative assassin be able to return tp her old ways and protect her friend’s life?