Naruto Invades The Outcast

He arrives in The Outcast with a Naruto skill tree and becomes a temporary worker.

He takes the Eight Extraordinary Skills in search of immortality.

Later, he breaks through space and invades the Naruto world with the Eight Extraordinary Skills, bringing the Five Great Nations to heel, stomping Madara in his Six Paths form, and punching Kaguya.

The Outcast

He enters the Luotian Grand Ceremony and becomes Wang Ye's nightmare...

He sweeps through the Northeast, where spirit mediums summon the immortals, and contracts Liu Kunsheng as his spirit beast.

He turns Biyou Village upside down and battles the temporary workers of the Sixth Division.

He pits his wits against the Ten Elders and investigates the Yaoxing Society.

He crushes the Tang Sect and destroys Natsushima.

Qin Heng gazes at the skill glowing faintly at the top of the skill tree and says calmly:

"Old Celestial Master, have you ever lost?"

Naruto

Amaterasu fused with the True Fire of the Three Origins.

Heaven Communicating Talisman Art fused with the Five Thunder Talisman.

Feng Hou Qimen in Susanoo form.

Six Treasury Immortal Thief fused with consecutive Night Guys.

He faces the entire shinobi world alone. Susanoo wearing a giant Buddha? Let's see how you like my improved version...

"Kaguya, ever seen a fist as big as a sandbag?"

[Not a System novel, and the protagonist isn't a self-sacrificing saint]

[Also known as The Outcast: Naruto, Back and Forth]