Deus Necros - Chapter 281: Title at End

I closed my eyes and let out a long, shuddering breath. The needle slipped through my numb fingers and clattered onto the rough pavement. Nothingness swirled around me, bringing the first peace I'd felt in my short, miserable life. No one would miss me, and if any did...? Well, there was always someone else to beat or rape. They'd move on quickly.But then...gods? Since when did nothingness have so many gods?Chosen by the goddess of Fate, I'm thrust into a world of magic and wonder alongside nine other heroes. A world where the gods reign supreme, and evil is vanquished before it can spread its blight.Can such a place truly exist? Could life really be worth living?I've heard that the brightest lights cast the longest shadows, but my life has been nothing but darkness. Perhaps this new world will be the chance I need to find the light, to see the other side.

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

Renji Kurozawa was just another nobody—until he died and was reincarnated in a world of swords and magic. Summoned alongside other “Chosen Heroes,” he hoped for a second chance at life.But his gift was different. “Death Claim”—the power to steal abilities from those he kills.Betrayed by his allies and left for dead, Renji embraces his dark power. With every enemy he slays, he grows stronger, turning from a forgotten outcast into the most feared force in the kingdom.Now, hunted as a villain and pursued by gods, Renji must carve his own path—one kill at a time.If fate wants a monster, he’ll give them one.

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?