How Old Is Izuku Midoriya in Naruto Shippuden

Let's cut right to the chase: Izuku Midoriya, the determined protagonist of My Hero Academia, does not appear in Naruto Shippuden. While both series are monumental pillars of anime and manga, they exist in entirely separate universes, created by different authors, with distinct power systems, lore, and characters. The idea of "Deku" appearing in the ninja world of Naruto is a fascinating thought for fan fiction, but it's not canon....