One-Click Upgrade: Super Decomposition System - Chapter 459

I originally thought this was a world like an ordinary urban novel…Drawing comics by myself, traveling is pretty good.
But tell me, what happened to this magician called “Emiya Kiritsugu” who jumped on my face?
Who changed the settings?
Currently involved in the content of “F/Z”, “F/SN”, “Fantasy Carnival”, “The Emiya’s Meal”, “The Holy Grail of the Imperial Capital”, “FLA”, “Elmello II Event Book”, “FGO”, “FE”, etc.
Others related to “JOJO’s Bizarre Adventure”, “Rebellious Lelouch”, “Persona 5”, “Attack on Giant”, “Death”
“FGO”, “FE Series”, “FA”, “FSF”, “Cangyin”, “Magical Girl Illya” will be involved next…

- Description from novelbuddy

Year 2099, the world as we know it now advanced in technology. Learning has become easier, and so is transportation. But in this new advanced world there is undoubtedly problems, beings who want to use the new technology to bring chaos and strife to humanity. Xander, a 17 year old normal High school boy buys a new MMORPG game and through it, he improves his skills in all aspects. He lived a normal life until one day when his father, who abandoned him and his mother for a year came back, claiming to be the leader of a group of super humans. This was the day Xander’s life changed. He was told he will get a power to stop the enemy but what will it be? Is he even ready to take on such a responsibility? Nobody knew that this enemy group were in charge of G. CO, the creators of League of Guardians virtual MMORPG game. What they plan to use the game to accomplish was... absurd... but anyway, read to find out. Let’s Follow Xander on his journey as he becomes the strongest Super human and save humanity from doom. ... [You have killed level 51 reaper] [Do you wish to demonify, level 51 reaper?] “Yes.” [You have created a new demon, Lich] The ability to create demons from dead creatures. With this power he shall defeat his enemies and get his peaceful life back.

When a national athlete of China laughs at being able to win a gold medal in video gaming, what a pro-gamer like yourself ought to do is take your size-42 shoe and measure it against his pretty face!

The Jiuzhou Continent contains an era of chaos and fiendish demons, haunted by mysterious beings and fraught with feuding martial families, demonic sacred grounds, and endless struggles between various powers. Conflict is a constant throughout the world.Within such darkness, Gu Chen opened his eyes to this reality.At the same time, he discovered that as long as he slew these fiendish demons and ghosts, his cultivation strength could continually elevate.Killing a Panic Level Demon yields a decade's worth of cultivation.Slaying a Ghost Level Fiendish Ghost brings thirty years of cultivation....Eventually, one day, staring at the endless swarm of fiendish demons and world-renowned grandmasters in his path, Gu Chen chuckled lightly, “Are you able to withstand this fist of mine, charged with 1600 years of cultivation?”