Masashi Kishimoto
Following the conclusion of "Naruto", Kishimoto became involved in the "Start of a New Era Project" commemorating the manga's conclusion and 15th anniversary. On the last page of the final chapter, "Weekly Shonen Jump" announced that a spin-off miniseries, also authored by Kishimoto, would be released in 2015. The series, "", ran from April to July 2015. Beyond this, Kishimoto was also heavily involved with two canonical movies, "" and "", as he personally supervised both movies, and illustrated several light novels. When asked by Boruto Uzumaki's voice actress Yūko Sanpei to continue making "Naruto" movies, Kishimoto stated that he was taking a break and could not physically do so.
Naruto Uzumaki
Screenwriter Maruo Kyozuka said that he wanted to depict a love triangle between Naruto, Hinata and Toneri Otsutsuki in the film. Although Naruto is initially clueless about Hinata's feelings for him, during the film he begins to acknowledge and respond to them. Hinata's character was also developed in the film, with Kyozuka saying that she had to put aside her feelings for Naruto to accept Toneri's proposal so she could find Hanabi. During this scene, Kyozuka wanted to depict Naruto at his lowest after his rejection by Hinata. He then returned Naruto to his brave self, with the character resolving to continue his mission regardless of the cost.