When the Fourth Great Ninja War erupted, Six Paths Madara arrived, the Divine Tree blotted out the sky, and the entire shinobi world was plunged into an apocalyptic crisis. No one knew that a silent observer had been present on the battlefield all along: Lin Yuan.
He was no ninja, yet he understood the source of chakra. He took no part in the conflict, yet held the key to its rules. From the life-burning power unleashed by the Eighth Gate, the Gate of Death, to Night Guy’s ultimate strike that tore through space; from the Divine Tree’s return and the arrival of the Infinite Tsukuyomi to Kaguya Otsutsuki breaking free of her seal, Lin Yuan analyzed the shinobi world’s most fundamental power system from the perspective of an absolute observer.
He never stole the spotlight or took credit for victories. Instead, he used the laws of space to stabilize collapsing pocket dimensions, harnessed runic power to uncover the essence of kekkei tota, and calmly studied the mysteries of life and death, souls, space-time, and bloodlines.
Naruto, Sasuke, and Kakashi protected the shinobi world on the front lines, while behind the scenes, Lin Yuan completed his ultimate analysis of the progenitor of chakra, the Ōtsutsuki Clan, and even the rules governing the entire shinobi world.
He never changed history, yet single-handedly revealed the deepest secrets of this world.
This is an extraordinary act of observation by a researcher, and a silent legend walking at the pinnacle of the rules.
It's very beautifully written.