In the cramped cave, Fugaku kept inscribing formulas to conceal their presence. Dense markings covered even the walls.
Most of the formulas served to block detection.
He had to make certain that even if Madara Uchiha sent out every White Zetsu, none of them could find the White Zetsu Corpse—or the person who had killed him.
Only Fugaku and Madara Uchiha knew Nagato's secret. But as far as Madara was concerned, he alone knew it.
Even Nagato himself did not know where the Rinnegan had truly come from. Perhaps he believed he had been born with it.
Over the formation that blocked detection, Fugaku inscribed a Summoning Formation and several Explosive Traps.
He then inscribed a matching Summoning Formation on a blank scroll. Once he summoned away the White Zetsu Corpse, the Explosive Traps in the cave would immediately detonate.
They would destroy every trace.
After finishing his work in the cave, he blocked the entrance with several large rocks. Anyone who found it would take it for an abandoned cave, never suspecting the staggering secret hidden within.
Back at Konoha Camp, Uchiha Jin dispelled his Shadow Clone.
"It's done," Fugaku said. "Now I can handle matters at the camp without worrying about it."
Jin smiled. "With you at the camp, I don't have to spend every day on edge, afraid some urgent matter will come up when I don't have the authority to make the call."
"I trust your abilities. You handle everything the Security Force throws at you. These minor matters in the Land of Rain aren't nearly as important as the Security Force's work.
"One concerns our own people; the other concerns outsiders. A mistake at home could damage the Uchiha's reputation in Konoha.
"But with outsiders, as long as we're strong enough, we can turn wrong