Naruto Shippuden OVA 9 : A Chunin Exam of Flames! Naruto vs. Konohamaru!!
Edit: Actually it should be OVA 9 not 8 could a mod change that for me.
I just stumbled into this. This was part of the DVD package with the Shippuden movie 5 Blood prison (which I haven't watched yet lol).
This is set in the Sand village just before the 4th Ninja war and they are holding Chuunin exams which Naruto and Konohamru are participating. I know someone is going to ask but this is just a fictional side story and has no real connection to the real story so don't worry about trying to make sense of it timeline wise.
- Overall this was pretty good.
Anyways I wont spoil the details for you enjoy: Naruto Shippuden OVA 9