This is really not mechanical ascension - Chapter 550 - 289 "Earth-shattering Giant Fist" System Takes Initial Shape!

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

After reincarnating, he realized that he was endowed with a miraculous game-like system, which enables him to increase his own stats and transcend the limits of the human body. This system even has a game-breaking ability to save and load in real life!

In this new world that’s akin to a 2-D game, he just wants to enjoy life and head for a glorious future… However, he is quickly embroiled in a complex plot. Can he unlock his true potential and utilize his system to break the shackles that confine him and discover the truth about his previous body’s circumstances?

- Description from novelupdates

He was reborn in the world of Naruto as a member of the Uchiha clan, known as Uchiha Genya. Born with the rare dual-pupil Sharingan, many saw him as a monster. Luckily, his father, Uchiha Kinya, was wealthy and influential, and he managed to protect Genya along with his mother Senju Yumi.Genya hoped for a peaceful life, but everything changed when he turned seven. The night of the Uchiha clan's massacre began.“You want to wipe out the clan and kill my father? Then don't blame me for fighting back”Uchiha Itachi: “Can your cursed eyes really break through my genjutsu?”“Dual-pupil Sharingan with six tomoe? How terrifying will you be when you awaken your full Sharingan? How many powers will you possess?””What terrifying strength... One punch can shatter the Susanoo!“That fateful night, Itachi slaughtered the Uchiha clan and defected from Konoha, but Genya managed to protect those loyal to him.Uchiha Obito: ”Genya can actually disrupt my Kamui?“Madara: ”A dance, you say? Ahem... Genya doesn't need to join!“Ten-Tails: ”This guy has more chakra than me!“

The leader of the thousand demons, the Demon God Chun YeoWoon. Due to an unfortunate accident, he had been sent to the distant future.

Strange not only becomes the Sorcerer Supreme after being reborn and possessing that body, but he also forms unexpected bonds with the Avengers, takes part in epic battles, and manipulates time and reality to prevent critical alterations in the timeline. However, despite his power and wisdom, his life is constantly interrupted by duty, leaving him no time to enjoy the youth he longs for.Just when he thinks he has gained complete control, in his sacrifice for the world, he is reincarnated again—this time in the Harry Potter universe, where he is reborn as Stephen Flamel, the adoptive grandson of the legendary Nicolas and Perenelle Flamel. Now, with a second chance to enjoy his childhood, Stephen embarks on a new adventure in a world full of magic.Notice: It contains yuri from a secondary character who shares prominence with the main character in later chapters.And no, it is not NTR. No problem.English version of my main work. On my Patreon I will upload the translations every day until I reach one chapter a day. I will post 5 chapters in advance on patreon. You can also watch the chapters of the Spanish version, and maybe you can use a translator. Remember that the worlds where the story takes place are not mine, they belong to their respective owners, only this story is mine.I'm not very good at English, so I have to use the help of ChatGPT for corrections. Please be patient.