"Could he really achieve that much? It seems I misjudged him."
"Freezing an entire mountain peak in an instant where there was no water... That brat... Though he still fell somewhat short of Hashirama back then, he was indeed quite impressive..."
Inside a pitch-black underground cavern.
The aged Madara Uchiha leaned on his cane and muttered, "He dug out Kakashi's Mangekyo?"
"Yes, Lord Madara. After Obito was stimulated into awakening the Mangekyo, the Three-Tomoe in Hatake Kakashi's eye evolved into a Mangekyo as well, but Yuki Yoru took it."
Half of White Zetsu's body emerged from the ground as he silently watched Madara's aged figure. "He also took Uchiha Shisui's eye earlier and has already transplanted it."
"A brat coveting Uchiha power..."
Madara snorted, and there was unexpectedly a strange hint of pride in his tone. Yet soon afterward, the old man, already nearing the end of his life, began coughing violently. His already frail body hunched over even further.
"Lord Madara!" White Zetsu called worriedly.
"It is nothing."
Suppressing the weakness within his body, Madara Uchiha shook his head. "But that brat truly grew far too quickly. When he was in Kirigakure, although he had mastered some rather interesting techniques, he was merely an ordinary ninja. Yet after stepping onto the battlefield, this brat reached such a level in so short a time..."
"Yuki Yoru's growth rate is indeed astonishing. Moreover, he seems to possess unique insights into Chakra, Spiritual Energy, and Soul Power."
"What do you mean?" Madara's expression tightened slightly.
"More than once, I have sensed that power from Yuki Yoru. He seems to have mastered a method of utilizing his own Soul Power and using it to strengthen his Chakra."
White Zetsu said quietly, "That technique differs from the Spirit Transformation Technique once used by Konohagakure