Kami-sama no Memochou - Volume 7, Chapter 5

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

Supreme Degenerate Lust System—the cheat ability that no man should have, but Alex? Alex earned it.This was the tale of a boy who wanked so furiously, so relentlessly, that his own dick—his loyal, overworked, war-torn comrade—finally called it quits and fell off.The same boy who was so hopelessly obsessed with a toothless, wrinkled gilf that he died doing what he loved—slipping in his own divine nectar like a tragic hentai protagonist with a severe addiction problem.He thought that was the end.That his dream—to finally pork a gilf—would go forever unfulfilled.But fate?Fate was a kinky, twisted bastard.When Alex opened his eyes, he was no longer lying in a filthy, crime scene-esque bedroom covered in the stains of his sins.No.He was in a new world—a world of magic, kingdoms, dragons, elves, and all that fantasy nonsense.But Alex didn’t care about any of that.Swords? Magic? Heroic quests?Boring.No, he had ONE mission.A sacred goal.A holy pilgrimage.To finally find the ultimate, well-preserved gilf and achieve his life’s work.And with the Supreme Degenerate Lust System at his disposal?Nothing would stand in his way.Not kings. Not gods. Not even the laws of nature themselves.The legend of the Lustful Fool begins now.

I just left an honest review, and I was reincarnated. But not into the novel I criticized—into the world of [SSS-Class National Power Heir] .I reincarnated as Baek Seo-jun, the older brother of the original protagonist, faced discrimination, and was discarded as a sacrifice.And then I experienced hell.With the power of the final boss, I will exact revenge on everyone—whether it’s the original protagonist or the villains.[The protagonist who has gained the power of the final boss]

John Browning, a former underworld assassin, went to attend his friend Angele’s wedding party but ended up meeting his former colleagues. Before he could think that the whole wedding ceremony was a setup to catch him, he felt dizzy all of a sudden!

At that moment, he knew that his lifelong friend had already betrayed him and sold him out. John was humiliated in front of hundreds of peoples and was forced to kneel in front of Thomas, the underworld assassin organization leader.

Within a few minutes, they beat him brutally, dragged him to some underground basement, and then locked him in a gloomy room.

John felt bitter when thinking about his friend’s betrayal. He laid on the cold floor for two days and died miserably. But his story didn’t end there.

…

In a world filled with magic and mystic powers, John Browning woke up in an 18-year-old boy’s body. Before he could open his eyes and see his current situation, he felt someone was dragging his body.

'How am I still alive?' He got puzzled inside.

But after a few seconds, John learned from the young boy’s remanent memories that he was transmigrated to a mystical fantasy game-like world filled with magic and mystic powers!