Konan asked, "Hell Valley? How come I've never heard of a place like that?"
Naruto smiled. "It's one of Kumogakure's most closely guarded secrets. I only learned about that treasure of a place after I became Hokage."
"Extreme heat, extreme cold-the climate there is brutally harsh. Even for ninja, it's a death trap, which also makes it an ideal place to temper the body. Only the Raikage and their successors are allowed to train there. As long as you can endure the conditions, a single day of training can be worth a hundred days elsewhere."
Konan's eyes widened. "A place like that must have quite a history, right? Was it formed naturally? None of the ninja I know could create somewhere so extraordinary."
Naruto shook his head. "It wasn't natural. It was the work of a successor to ninshu from the Sage of Six Paths' era."
Konan was even more astonished. "A successor to ninshu from the Sage of Six Paths' era?"
Naruto's gaze deepened. "Come to think of it, the Land of Lightning, where Kumogakure is located, has close ties to the Sage of Six Paths' ninshu. His descendants once settled there and multiplied..."
"That's why Kumogakure also inherited several ninja tools that the Sage of Six Paths owned during his lifetime."
"Even Kumogakure's once-notorious brothers, Kinkaku and Ginkaku, had a trace of Uzumaki Clan blood in addition to their Yotsuki Clan lineage. I only discovered that truth later, while researching the Uzumaki Clan's genealogy..."
"And it's not just Hell Valley. Kumogakure also controls the Waterfall of Truth on Turtle Island, another precious place where you can hone your inner self. I went there once to learn to control Kurama's power."
Konan couldn't help worrying. "Does that mean you'll clash with Kumogakure again? Let me go with you."
Naruto