I am the first leviathan eater of humanity again:Futa - Chapter 1: After all these years

Humanity was on the brink of destruction. Muyoung, an assassin from the Forest of Death, fell to his knees. There were corpses all around him. For years, he had worked for the Forest of Death and had finally been able to eradicate them. Now, he, himself, was about to die. He closed his eyes as he felt his heart stop beating.

One day, countless natural wormholes tore open across the Blue Star Continent, revealing gateways to countless worlds. With this discovery, humanity was thrust into an era of interdimensional conquest, waging war across realms to seize power and resources.Su Xiuyu, a seemingly ordinary high school student from Yangcheng No. 1 Middle School, lived a mundane life—until his third year, when everything changed. Awakening the mysterious **Reincarnation System**, he regained memories of a past life and the truth of his existence. He wasn’t just another student—he was a traveler, a reincarnator destined to walk the path between worlds.His journey began in the brutal Warring States Period of the Naruto world, where blood and war shaped legends. But that was only the beginning. With each reincarnation, he would step into new universes, face gods and monsters, and carve his name across the multiverse.From the shadows of history to the frontlines of cosmic battlefields, Su Xiuyu would rise, one world at a time.

In the Sky Sword Continent there are thousands of sects and strong cultivators as common as trees. In order to prevent his older sister from being forcefully married off, Lu Xuan had no choice to but to unceasingly cultivate and enter a sect to ask for a favor. By chance, a sword-shaped crystal of mysterious origins entered into Lu Xuan’s body, containing countless top-class martial skills, powerful martial arts, and everything you could wish for! A martial legend starts here…

[Congratulations! The system will guide you to find a handsome and kind husband in the apocalypse!]After being killed by the demon king, the demon queen had a second chance to live in the body of a woman in the apocalyptic world, Medeia Vega.Their planet has apparently been hit by cosmic radiation, causing living things to mutate and develop unique abilities.People with weak mental states couldn't keep their humanity and turned into monsters, while the survivors had to fight those monsters endlessly to stay alive.Her main mission in that world was to find a kind-hearted husband, but it just so happened that Medeia also built a safe haven for people.Would she be able to find the man of her dreams in the apocalypse?————[Before dating a kind hearted man, you should also have a pure heart!]“Fuck.”[Foul language detected! Penalty minus 20 points!]“Damn you—”[Foul language detected! Penalty minus 30 points!]“You shitty system, how dare you keep reducing my point?! I hope you rot in hell, you bastard!”[Foul language detected! Bad curse detected! Penalty minus 100 points!!!]