Once Human, Now a Parasite - Chapter 325

A genius idiot born from an incestual marriage!

A young man with triple identities of worker, murderer, and university student!

Cadillacs and Dinosaurs, Sangokushi, KOF, Knights of the Round, Shadow Force, Street Fighter…

Each one of the arcade games you are familiar with has already been changed into a prerequisite for survival!

Slaughtering Shiranui Mai with Ya Otome, Jigoku Gokuraku Otoshi to kill Li Dian. There is only what hasn’t been thought of, there isn’t anything that can’t be thought of!

On an unknown day, when you walk down the stairs, you may accidentally walk into this —— arcade nightmare!

- Description from Novelupdates

The world had changed when the System arrived, alongside the Cataclysm that filled the world with monsters. The technology was gone, replaced by classes and skills that allowed the people to fight back. When Devon ended up as a Blacksmith, a class that didn’t grant Intelligence, he had to face the reality, that his old career that he loved - mathematical sociologist - was over. Instead, he had ended up as yet another discarded member of the production class, overshadowed by the existence of the System Shops to the point of total marginalization. But, what if all he needed was to reapply his scientific thinking to the System...

Reincarnated and traveling to another world, Eiji Seiya initially thought the world was normal. That was what he thought before he met the heroine and protagonist of the franchise he had watched in his previous life.Not only that, after he awakened the Inner Voice System to grow strong by complaining about plot, heroine and protagonist in his heart to get many rewards.He is determined to increase his power so that he can save his home world, the world where he was reincarnated that was hit by the disaster “Honkai” and save beautiful girls like Kiana, Mai, Bronya, Rita and others who had tragic endings in the original works!“I will save them all!”However... Everything went smoothly... Eiji earned rewards every time he changed the plot in another franchise.It's just that... What's wrong with these heroines?Lala Satalin Deviluke who was supposed to be engaged to the protagonist instead became his fiancée.Sona Sitri suddenly called him to the student council office and said she wanted to make a deal with him.Rias Gremory who was supposed to ask the protagonist for help to solve her political marriage problem with Riser Phenex inexplicably came to him.The girls were disgusted at the protagonists of their respective franchises.Something was wrong here!Not only that, heroines like Kotegawa Yui, Sairenji Haruna, Akeno Himejima, Kuroka, Serafall Leviathan, Grayfia Lucifuge, Sakurajima Mai, Ai Hoshino, Kasumigaoka Utaha and others...They like him!All the super beautiful and sexy women that many men in the world covet surround him and leave their respective protagonists.Grayfia even betrayed her husband.Eiji who saw all this was dumbfounded.At first he was confused as to why these heroines were surrounding him, but gradually he realized and knew that it was all happening because ...His inner voice!The plot that has been changed by the MC:To Love Ru: 83%Highschool DxD: 82%Shinmai Maou no Testament: 92%Oregairu: 89%Saekano: 84%Oshi no Ko: 100%Rascal Does Not Dream Of Bunny Girl Senpai: 100%Mieruko-chan: 89%Trinity Seven: 38%This is the plot change process of the latest chapter and will change as the story progresses.By the way, the grammar at the beginning is bad and will improve as the chapter progresses. However, my writing style will not change much because this is an inner voice novel, which means that there will be many reactions from each character.Oh and in chapter hundreds there will be a group chat to prevent the loss of interaction between the heroines. It's a special chat group for the heroines in the MC's harem.

Kael Veyne was betrayed, hunted, and left for dead in the depths of the Abyssal Dungeon.As an infamous assassin, he was the empire’s deadliest shadow—until the day his guild turned on him.Ambushed in the Abyssal Dungeon, his body was torn apart, and his soul was consumed by the abyss. But death was not the end.He reincarnates 25,000 years later with the Devouring Bloodline System. Kael awakens in the body of a noble scion sharing a similar name to him, and his very essence fused with eldritch power.With every kill, he absorbs primal energy, evolving into something far beyond human. Monsters, mages, mancers, knights, assassins—nothing is beyond his reach.