As the days passed,
Shinji remained busy.
Though he was advancing both the "Rinnegan Plan" and the "Tenseigan Plan" at the same time, he didn't dare neglect his training.
Almost every day, he trained Taijutsu at high intensity while carrying fifty kilograms of weights.
With that much effort, his progress was naturally clear to see.
Shinji had never been a genius. Especially when it came to Taijutsu, he had no more than an ordinary person's aptitude. That might not be obvious during normal training, but in a desperate situation, the gap between him and a true Taijutsu prodigy became apparent.
Because he understood his own limitations, he didn't dare put himself in a desperate situation. Whenever he faced a difficult opponent, he would often choose to overwhelm them with Susanoo, regardless of the cost to his Dojutsu.
But he knew that Susanoo could only overwhelm opponents up to Kage Level at most.
Beyond that,
Susanoo's overwhelming advantage would become less and less apparent. At Six Paths level, it would be just an ordinary technique, and even a Complete Body Susanoo would be no exception.
At that level, ordinary ninjutsu and genjutsu would also lose much of their effectiveness. In the end, the contest often came down to something more direct: Taijutsu!
So he could forgo training in ninjutsu and genjutsu, but he absolutely couldn't neglect his Taijutsu training.
Aside from training, he would also visit Orochimaru's secret base from time to time to exchange ideas about human experimentation.
The "biological exoskeleton" implanted in Kimimaro was obviously no secret from Orochimaru.
But once implanted, the "biological exoskeleton" couldn't be removed, so Orochimaru had no solution for it.
Of course,
Orochimaru wasn't the type to take a loss without retaliating. To appease him and keep him from coveting the "biological exoskeleton" implanted