Morgoral
Hey, thanks for reading my story. It might not have been explained to well in the chapter, but the unlocking of Naruto chakra took place about 4 months into the two year timeskip. The incident with transforming into Anya took place almost at the end of the timeskip. So Narutos chakra was unlocked at this point, and Anya had taught him transformation. This is also the reason why Mc regretted teaching him transformation :)