Naruto Scientist: Truth Seeker

When the Fourth Shinobi World War erupts, Six Paths Madara descends, and the God Tree blots out the sky, the entire Shinobi World faces apocalyptic despair. No one knows that a silent observer has been on the battlefield all along-Lin Yuan.

He is no ninja, yet he understands the very origin of chakra; he takes no part in the conflict, yet he holds the key to its governing laws. From the life-consuming eruption of the Eight Gates' Gate of Death to Night Guy's ultimate, space-rending strike; from the God Tree's reabsorption and the advent of the Infinite Tsukuyomi to Kaguya Ōtsutsuki breaking free of her seal, Lin Yuan analyzes the Shinobi World's most fundamental system of power from beginning to end, remaining an absolute bystander.

He neither steals the spotlight nor claims others' victories. Instead, he works in secret, using the laws of space to stabilize a collapsing alternate dimension and the power of runes to capture the essence of Kekkei Mōra. With the utmost composure of a researcher, he dissects this world's mysteries of life and death, souls, space-time, and bloodlines.

Naruto, Sasuke, and Kakashi protect the Shinobi World in the spotlight, while behind the scenes, Lin Yuan completes the ultimate analysis of the progenitor of chakra, the Ōtsutsuki Clan, and even the laws governing the entire Shinobi World.

He has never changed history, yet through his efforts alone, he uncovers this world's deepest secrets.

This is a researcher's ultimate observation-and a silent legend walking at the pinnacle of the laws.