Myriad Worlds: Starting by Killing Uchiha the Worst Son

Transmigrating into Naruto, he becomes an Uchiha and awakens the Mangekyo Sharingan.

His left eye copies, while his right eye deduces.

Flying Thunder God?

Kimimaro's Kekkei Genkai?

Earth Grudge Fear?

Sage Mode?

I'll take those.

He originally planned to use his Mangekyo abilities to beat up the Five Kage, kick the Otsutsuki around, and create a new path to immortality in the Naruto world.

First, kill Shisui, then groom the most filial son and acquire two pairs of Mangekyo Sharingan.

After starting the Uchiha massacre, he planned to reach the pinnacle of life.

Who could have guessed he'd awaken a golden finger and embark on a journey through the Myriad Worlds?

Why bother with all that effort anymore?

He combines Kimimaro's Kekkei Genkai, Earth Grudge Fear, and Sage techniques, drawing on the culture of his previous life to create the modified Sixfold Immortal Thief, which devours everything and strengthens his foundation.

You use the modified Sixfold Immortal Thief to devour Uzumaki Naruto and Uchiha Sasuke, gain the power of Six Paths Yin-Yang, awaken the Rinnegan, and learn...

You learn Flying Thunder God, Flying Thunder Formation, and sealing techniques. Combining them with the theoretical knowledge you've mastered, you learn how to forge teleportation arrays.

One Piece, Marvel, comprehensive martial arts, cultivation...

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.