Surviving as a Maid in a Horror Game - Chapter 1

Ukei Kaito fought a desperate struggle in order to fulfill his role as a summoned hero. He defeated the Demon Lord and saved the very world, only to meet an end filled but with betrayal. The companions that he’d trusted throughout his journey betrayed him and killed him by sticking a blade through his chest.

The world had started doomsday, and I struggled for a year, before I died under an enchanted beast’s claw. Heaven has given me another chance, back a day before the end happen. Will I be able to change my fate, and that of my loved ones? Now, I will start my journey on becoming the strongest on the planet that the Gods have changed into a game world.

- Description from Novelupdates

Leiyin accidentally crossed into the One Piece World, and accidentally obtained the Naruto System.

In the wake of the apocalypse, betrayal doesn't just stab you in the back—it bites. Zorvax learned this the hard way. Abandoned by those he trusted, he didn't just become another number in the legion of the undead. No, his fate was far more peculiar.“I thought death was the end... I was wrong,” Zorvax mutters, his voice a gravelly echo of his former self. He's a zombie, but with a twist—he's got his human mind intact. Trapped in a decaying body with an insatiable hunger, Zorvax finds himself in a gruesome predicament that's just the beginning of his ordeal.Enter the 'Zombolution System,' a mysterious power he awakens that's as cryptic as it is potent. “They wanted a monster? I'll show them the true meaning of terror,”Zorvax boasts, with a smirk only a sentient zombie could muster. This dark gift is his ticket to ascend beyond a mere walking corpse, promising to unlock abilities that could crown him the emperor of the undead.As Zorvax hones his newfound skills, the line between man and monster blurs. Will his human intellect triumph, or will the beast within claim the throne? “This world has no place for the weak,” he arrogantly declares, ready to challenge fate itself.