Rinnegan!
The supreme ocular jutsu of the Naruto World, known as the eyes that governed life and death, awakened in River in an instant after he mastered Wood Release and, by extension, Asura's power.
The concentric rings in his purple Rinnegan seemed to symbolize this world's deepest secrets, radiating mystery and power.
In the original story, Madara Uchiha had only awakened these eyes in his old age, long after incorporating hashirama cells into his body.
But thanks to his unique learning ability, River had acquired them in an instant.
An endless stream of vitality and mysterious power surged forth at that moment, flooding every part of his body.
At the same time, strands of wondrous awareness emerged in his mind.
"Reincarnation through the Six Paths."
"The six chakra natures."
Understanding dawned in River's eyes, and a smile spread across his lips.
From that moment on, he could use the abilities of the Rinnegan, including the Deva Path, Animal Path, Preta Path, Human Path, Naraka Path, Asura Path, and the Demonic Statue of the Outer Path.
Without question, these legendary eyes were the most powerful ocular jutsu.
"A perfect match for my physique."
After carefully sensing the changes, River sighed softly.
The next second, he took a step forward. The rings in his eyes vanished, leaving ordinary eyes with dark pupils and white sclera.
This was a sign that the Rinnegan had integrated perfectly with his physique: he could conceal its distinctive appearance at will.
Of course, the amount of chakra in River's body at present could not sustain the eyes' consumption, either, so he could not keep them active for long.
"I never expected a visit to Orochimaru's Laboratory to bring such a pleasant surprise."
River smiled and walked briskly away, in high spirits.
His Mangekyō Sharingan had yet to