Is there a special significance to the "20" on this Naruto/Kakashi shirt?


I recently got this shirt and I was wondering if there was a special
significance to the "20" on the shirt?

> !["KAKASHI 20" Naruto Shippuden
> T-shirt](https://i.stack.imgur.com/lnVDZ.png)




The 20 on the shirt represents the age of Kakashi Sensei.

