In the end, Uchiha Madara did not accept Shin's spacetime scroll.
Perhaps his tsundere streak had acted up, or perhaps he wanted to go down and find his good friend Hashirama. In any case, Madara refused with a reason that Shin seemed to understand, yet did not truly understand.
Shin did not insist.
Naturally, Uchiha Madara was no fool. He had considered a backup plan before making that choice—essentially the plan of reviving himself afterward. Only, with Shin around this time, he felt far more at ease. They even discussed it at length.
Shin's response was straightforward: they could talk about that after Madara awakened the Rinnegan.
There was plenty of time ahead. Madara was still in his prime, with decades to go before old age, so they set the matter aside for the time being.
There was not much left to do. Shin briefly discussed his plan to relocate the clan to the moon with him and received his support. Madara also said that Shin could make all decisions concerning the Uchiha Clan.
After that, there was nothing else to discuss, so Shin rose and left.
The latest equipment Madara had requested was sent over by Shin the next day. Shin had little interest in what Madara might manage to research.
At most, White Zetsu might appear. Now that Black Zetsu was gone, these war weapons left behind from Kaguya's era did not warrant Shin's attention.
Everything returned to peace. Naturally, Shin kept the final spacetime scroll for himself; it was much easier than constantly casting Time Slow on himself.
Shin spent most of his time in Uchiha Valley, keeping Mito and the maid company whenever possible. As for the base, he maintained a schedule of visiting once a week.
He also began preparing for the migration to the