The characters of the Naruto universe have left a lasting impression on audiences across the world — for their gallantry, generosity, and willingness to sacrifice when necessary. With roughly seven hundred episodes, many diverse characters have assisted the titular protagonist on his journey. In Japanese culture, the year of a person's birth is often considered to be a major contributing factor in the development of their personality. Over the years, fans have often wondered how astrology fit into the creation of their favorite characters. Each Naruto character's birthday is a contributing factor to who they are.
Source：https://www.cbr.com/every-naruto-hero-birthday/
