On the southwestern frontier of the Land of Lightning.
Indra and Black Zetsu trudged through the harsh, windblown sand.
Indra had not said a word the entire way.
Seeing that they could not simply keep walking like this, Black Zetsu finally asked, "Indra, where exactly are we going?"
Indra gazed into the distance with his Sharingan and coldly gave his answer: "Samsara Grotto."
Black Zetsu was puzzled. "Why have I never heard of a place like that?"
Indra replied coldly, "It is an alternate dimension formed where the Sage of Six Paths was buried after his death. A secret known only to Asura and me."
Black Zetsu was astonished. "Buried? Wasn't that unfilial son Hagoromo cremated?"
Indra sneered. "Heh. The cremation was merely a show for outsiders, to make people believe the Sage of Six Paths' body no longer existed. It was that brat Asura's idea..."
"He couldn't bear to burn the Sage of Six Paths' mortal shell, but he also had to prevent people with ulterior motives, like you and me, from exploiting the body. That was the poor solution he came up with. But he still couldn't fool me..."
Black Zetsu understood. "So that was it. He was afraid someone would steal Hagoromo's sage body and Rinnegan. That brat Asura really was a sly one. He even fooled me!"
Indra said coldly, "Nothing but petty suspicion. If I had wanted to take the Sage's Rinnegan, I would have done it when he was bedridden in his final years. Why wait until after his death?"
Black Zetsu asked again, "Since Hagoromo's body has already become this so-called Samsara Grotto, there's no point in us going there, is there?"
Indra revealed another secret. "Before his own time was up, Asura went to Samsara Grotto to mourn the Sage. He never