There were other forces behind Karin, so something like nurturing a half-damaged Mangekyo could only happen if she agreed willingly. He couldn't force her.
Otherwise, if word got out and the Mangekyo was lost, he'd end up worse off than before.
That was why he hadn't used his position as the organization's leader to force Karin to obey.
Fortunately, he still needed a week to practice the transplant surgery, which gave Karin time to consider.
Looking at the empty round table before him, Shinji mused, "If I could mark Deidara too, I'd be able to contact him through Naobi."
He was still thinking about the White Zetsu Cells.
Having Karin receive a half-damaged Mangekyo transplant would only restore its vitality. With the Yang Release Chakra she currently possessed, it probably wouldn't be enough to restore the Dojutsu of a Mangekyo that had gone completely blind.
So if he wanted to fully restore the Dojutsu in two half-damaged Mangekyo and one completely damaged pair, Karin's Sage Body would probably need to advance further.
And that meant he'd have to rely on Deidara, who had joined the Akatsuki Organization.
Shinji still didn't know how many Spirit Bodies Naobi could mark, but he had a feeling that seven or eight should be no problem. So he really wanted to see Deidara again and mark his Spirit Body.
At the same time, as he grew more adept at wielding his grandmother Chiri Uchiha's Mangekyo, he had a vague feeling that the Dojutsu Magatsu, contained in his blind left eye, was connected to Naobi in some way.
The true power of this Mangekyo might not lie in Naobi, but in Magatsu.
*Why did she give up Magatsu back then? Is Magatsu stronger than Naobi, and I'm just imagining it? Or was there some reason she