The Extra becomes the Villain's Bodyguard - Chapter 20: Ch: Jarvis

Kurogami Ichiro was desperate because he couldn’t achieve what he wanted when he once started his martial arts path at age of 8!

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

Being a nobody from a poor district of the Federation, Nick is a sixteen year old boy just trying to find his place in the world. When he finally gets his shot to enter the Beast Domain upon turning sixteen, he jumps at the opportunity to finally make something of himself — to carve out his own future.His goal? Survive. Hunt. Earn enough money to finally support his little sister back home and bring them out of poverty.But to a naïve young boy like Nick, the world is far more sinister than it seems — leaving him no choice but to adapt or die.To a poor young man like Nick, though, there was only one choice he could make.Follow Nick as he navigates these obstacles and carves out a future for himself and his sister, all while uncovering the various mysteries that shroud his worldview in darkness.

Yours Truly shall have all of you bow down to me!

Arriving in this brand-new world, Lin Fan found himself in possession of a system which allows him to level up indefinitely unbounded by the limitations of this world. Upon learning a powerful technique of Monkey Steals Peaches, Lin Fan realises that he’s poised to literally become the strongest person in this entire world. But of course, how boring would that be unless the whole world gets to know about his great name?

Shameless. Righteous. Smart. Lin Fan will let no one (or balls) stand in his way to glory!

- Description from Novelupdates