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Although Ueno Kei and Jiraiya were nominally fellow disciples, the age gap between them was far more than just a year or two.
So when Jiraiya reached out and rubbed Ueno Kei's head, it looked perfectly natural and harmonious.
To Ueno Kei, Jiraiya's personality was much like the Third Hokage's. His brilliance shone as brightly as the sun, making Ueno Kei feel as though he were a father figure.
"By the way, Senior Brother Jiraiya, I didn't ask earlier—is it really appropriate to teach Naruto the Summoning Technique so soon?" Ueno Kei asked with a slight tilt of his head. It was not that Naruto could not learn the Summoning Technique yet, but Ueno Kei felt that it would be more convenient for him to first master chakra control and chakra refinement before learning it.
Fundamentally, there was nothing difficult about the Summoning Technique. Whether it was the hand signs or anything else, it was all quite simple. Its only difficulty lay in needing a contracted summoning beast, as well as an enormous amount of chakra.
Neither of those was a problem for Naruto, but that guy's chakra control was simply too horrible to look at. Ueno Kei had already taught Naruto the chakra-control training methods of tree climbing and water walking, but the results had not been as good as expected.
It was only after the Third Hokage reminded him that Ueno Kei realized the Nine-Tails' chakra inside Naruto was interfering with his ability to control and refine chakra properly.
It seemed that he would have to pay Naruto's tenant a visit sometime—and it was