"What do you mean you forgot about me over there?! That's outrageous! That place was cold and damp, with nothing at all—I almost had to gnaw on tree bark!"
Naruto Uzumaki sat wrapped in a blanket beside the fire, warming himself as he complained nonstop.
Kakashi Hatake said, "We thought you'd been sent straight back to the village—" With Sai and Yamato present, it was inconvenient for him to mention Left Mysterious Minato.
After leaving the Kamui Dimension, Kakashi Hatake and Yamato had already learned from Sai what had happened outside by the time Wu Yu left to pursue the enemy.
An Anbu who had arrived with Nakamori Wu Yu and possessed an exceptionally refined Body Flicker Technique—put those traits together, and who else could it have been but Left Mysterious Minato? Kakashi Hatake thought. Since Teacher Left Mysterious Minato had been sent away by Wu Yu along with Naruto, Teacher Minato had probably sent Naruto straight back to the village while he was at it.
Naruto Uzumaki scratched his head. Having been a ninja for so long, he was not careless enough to blurt out confidential matters, and he held back the matter of Left Mysterious Dad as well.
In truth, after repairing the Eight Trigrams Seal in Shikkotsu Forest, Left Mysterious Minato had unexpectedly dispelled ahead of schedule due to Chakra exhaustion. He had first transported Wu Yu and Mysterious Kaguya from Ryūchi Cave to Team Seven in one go, then spent a huge amount of Chakra repairing the Eight Trigrams Seal—not to mention the Chakra he had used while dealing with Kakuzu—
Wu Yu had not put a Restraining Curse on Left Mysterious Minato. Once his Chakra ran low, he naturally dispelled with a sudden "poof," just like an ordinary Shadow Clone.
This was a Left Mysterious