After killing Konan, Obito Uchiha easily found Nagato's remains and took possession of the Rinnegan.
"Fortunately, it hasn't been long, and the Rinnegan still retain their vitality. As long as they're stored in suitable nutrients soon, they can quickly recover to their original state."
Obito carefully examined the Rinnegan. Only after confirming there were no problems did he place both eyes into the container he had prepared beforehand.
Bubbles slowly rose as Obito studied the Rinnegan.
"According to Madara, the Rinnegan can't be preserved like this forever. To keep them from losing their vitality, they have to be implanted in suitable people."
"It looks like I need to find some Ninja as soon as possible to serve as vessels for the Rinnegan."
Obito actually coveted the Rinnegan's abilities too, but with his current physical constitution, he could only use the power of one Rinnegan at most.
If he used both Rinnegan together, Obito would not be able to withstand the backlash of their power.
One look at Nagato's condition was enough to understand how severe the Rinnegan's drain was!
So even though he thought highly of himself, Obito would not court death by implanting both Rinnegan in himself.
Besides, setting aside his own extremely frequently used Mangekyō Sharingan-namely, Kamui-this was the trump card Obito currently relied on to run rampant throughout the Shinobi World.
After all, Space-Time Ninjutsu were already rare, let alone ones comparable to Kamui.
Furthermore, Kamui was a Mangekyō Sharingan ability Obito himself had awakened. Using it came effortlessly, so there was absolutely no need to replace it with a Rinnegan.
As for his other Sharingan, which had gone blind from using Izanagi, replacing that with a Rinnegan would not be a problem.
But after some thought, Obito abandoned this tempting idea. It was not yet time