While the Five Great Nations rested and recuperated, Obito finally found Orochimaru's experimental base that day, but Kabuto Yakushi was the only one there.
"I haven't found Lord Orochimaru yet. You're too early."
Kabuto glanced at Obito and continued his experiment, not at all worried that Obito would attack him.
If not for the things Orochimaru had left behind, Kabuto would have long since lost his reason to live. Whether he died really no longer mattered to him.
"Do you know about the Dead Demon Consuming Seal?"
"So that's what you want!"
Kabuto pointed casually. "In the box in the corner. Make a copy yourself if you want it. Whether you undo the seal or cast the sealing jutsu, it costs a life.
"Not many people can learn that thing. I can't either."
Obito glanced at the box but was in no hurry to go over. He knew how difficult forbidden jutsu were to learn. If Madara Uchiha hadn't taught him, he might not even have learned Izanagi.
"Do you know about the Jōgan?"
"Yes! But I don't have one. You've come to the wrong place!"
"Can you create one?"
"I don't know!"
Kabuto Yakushi set down the vessel in his hands. "First, I need to purify the bloodlines, and I only recently began experimenting. I need to learn how to purify bloodlines, and I also need test subjects.
"Second, I only have one Byakugan and the Uzumaki bloodline. In other words, I only have one chance.
"Third, are there any other conditions involved in the Hyūga and Uzumaki Clans producing a Jōgan? That requires researching the literature.
"I want the Jōgan even more than you do. Only then might I be able to find Lord Orochimaru."
"You need Byakugan, right? I can go to Konoha and get them for