Fate/DXD:Arbiter of humanity.

They call it progress... These men and women in lab coats, their faces shielded by a facade of detached professionalism, had sent a chilling statement echoed in the sterile halls of the Cube prison, behind the glass... there was only failure. And S.H.I.E.L.D.'s secret experimentation. Mia, having no relatives, no family, nor anyone she could rely on, has just died with the Gamma Radiation mixed with the Super Soldier Serum, at the hands of S.H.I.E.L.D.'s best scientists. However, things changed the minute one of the S.H.I.E.L.D.'s agents took her body to throw her into a ditch.

Previously, it was called Reincarnated as a Supernatural Horror Entity. Jack, a content creator for mystery, horror, and conspiracy stories, died and was reborn as a formless ghost. He acquired the system-panel like ability to get stronger. He could earn new supernatural traits. And he could even evolve and gain new incarnations. The problem was... he was now in an alternate Earth. The one that was still in the Industrial Revolution Era. The one with cursed steam engines, monster-infested sea exploration, mysterious pirates, supernatural powers, mythical creatures, demonic entities, and completely different geography. Jack had to adapt and survive. Thus, the legends of the Circle of Jacks appeared in that world. Transcendent incarnations of Jack made their impacts in this new world... o Jack Mystery, the mysterious specter, o Judge Jack, the rakshasa of judgement, o Jack Night, the steamrune engineer and treasure hunter, o Racer Jack, the kamaitachi speedster vigilante, and o Jack Lantern, the devil puppet who decided to be a bizarre puppeteer. I will also be posting this story on RoyalRoad.com: https://www.royalroad.com/profile/36721/fictions If you, dear readers, enjoy the story and are willing to support my work, please visit patreon.com/Alkrishna. It should be about 15 chapters ahead there.

In this world where dungeons and monsters invaded, only awakeners could enter the gates, clear dungeons and save humanity. Lucien Valerius transmigrated into this new world— as an ordinary landlord owning a tiny, tattered house. Oh, plus an arrogant teen tenant. But so what? As long as the rent money was there, even if the world ended, Lucien doesn't care! Until a gate opened in front of his house and monsters broke out. His beloved house was about to be gnawed bare. And his tenant didn't pay rent. All hell broke loose. Lucien awakened on the spot! DING! [You have awakened as a Dungeon Landlord (Myth)] Instead of becoming a hunter— his house became a dungeon. Every night, his house was dragged to the Death Zone full of wild dungeons and monsters. The only way to survive? Evolve his house— no, his dungeon. DING! [Dungeon successfully acquired] While others raid dungeons, Lucien acquired them, adding more dungeons to his territory. DING! [Synthesize is available!] Combine two dungeons, create a new one with brand new monsters and resources! DING! [You have signed a new tenant: ?? Rank Vampire] [You have unlocked a new facility: Blood Pool] Level up strange tenants. Use their skills. Summon them! Soon, top hunters and guilds begged to be his tenant. Elite clans and governments eyed his house greedily. But Lucien's power came with a price. If he wanted to grow stronger, prepared or not, every month— He had to open his dungeon to the world. Let the hunters in. DING! [Dungeon raid will start in 3...2...1...]

After her death, Lilith awakens in a world where fourteen billion players struggle for survival, power, and the right to continue existing. Over Ten million of them have become Demon Lords, each building their own race, their own territory, and their own army. Demonic Dragon Knights command vast legions, Vampires rise to build empires, and Lords of Catastrophe leave nothing but ruin in their wake. Yet Lilith enters this world as the Primordial Succubus Monarch - and quickly realizes she cannot walk the same path as the others. Instead of endless armies, she is given only three succubi, each unique in their own way, and the system permanently seals her ability to summon more. In a world where power is measured in numbers, such a gift feels more like a death sentence than a blessing. If she wants to conquer this world, she will have to take armies from other Demon Lords, grow stronger despite her limitations, and prove that a demon of desire is not meant only to seduce - but to fight. And above them all stand the Heroes… beings created for one purpose alone. To hunt and kill Demon Lords like her. And Lilith would soon realize… that neither Heroes nor Demon Lords were the true predators of this world. *** You can support me on Patreon: https://patreon.com/TorqQ

"Take me instead." Three words. Guinevere Lunaris trades herself and saves 300 lives. Tied. Gagged. Underestimated by a mile. They chain her to a tree in the snow. Mistake. While running for her life, she meets a stranger in the dark and tells him to hide so he isn’t killed. Twelve hours later, he walks into her father's hall wearing a crown. The man she just told to hide in a hole is Maddox Drakencrest, High King of Velkaris. Ruler of an entire continent. Maddox hears his dragon say ‘mate’ right away. But her wolf is silent. More and more Alpha Kings enter the hall. She catches the tail end of her father’s toast and chokes on her wine. "—leave here with a virgin bride." An auction for her hand turns into a full-out bidding war. Maddox wins. 750 million in gold, three dragon fleets, and an urn full of the bastard who chained her the day before. Every force in Velkaris is betting against a wolf on a dragon throne. The Elders say the queen must be a dragon rider, which is impossible for a woman without dragon blood. The king's half-brother agrees with them, but his solution is a civil war and taking the crown for himself. If his brother’s rebellion wins, Maddox dies and she belongs to him. If the elders win, she goes back to the father who sold her. Neither is happening. Her wolf calls Velkaris home. She's not giving it up. They expect Guinevere to behave like a good little wolf princess and play along with their political games. She says bet.

Following up on Fang Yuan's journey to eternal life after falling in the heavenly court, he uses the spring-autumn cicada to go back in time to the three kings' inheritance. Yes it Regression fanfic

Ashes of Legacy Synopsis: "Some deaths are merely the beginning of a new, far more dangerous game." Adrian Kyle was a master strategist and a cold-blooded politician who controlled the world from the shadows. He thought his story had ended in a flash of fire, but fate had other plans. He finds himself reborn in a world governed by magic and might, in the body of a young boy named Grenfort Kael. In this new realm, magic is a reality, and power is the only law. With the mind of a tactical genius, Kael seeks a peaceful life with his newfound family. However, in a world divided by vast empires, rivaling powerful clans, and unexplored continents, peace is a luxury that few can afford. As an unknown power begins to stir within him and shadows from a forgotten past emerge, Kael is thrust into the heart of a global conflict. Between political schemes and the clash of ancient bloodlines, he must use his strategic brilliance to protect those he loves while discovering the truth of his own existence. When a strategic mastermind meets a world of magic, a legend is born.

Zachary Torres died as he lived... terminally horny for monster men. When he wakes up in Hell, he's given a once-in-a-lifetime offer by a suspiciously handsome demonic President, instead of eternal torment, he can join a dysfunctional warband of Hell's most elite (and attractive) demons to take down the glittering bores of Heaven. Zac figures this is a win-win. He's surrounded by a seven-foot wolf general with a beard, a pompous lion in a suit of armor, a grumpy wendigo who hates shirts, a sarcastic owl pirate, a bird-man who looks like a WWII pin-up, and a three-headed dragon butler. He is living the fantasy he literally died for. The demons, however, quickly realize their new human asset is a walking HR disaster with zero survival instincts and a very specific... "condition" that is the source of all of his (self-identified) woes, and quickly becomes everyone else's as well. A hellarious M/M thirst fest for the cultured demon enjoyer. Daily updates!

This is a Rimuru fanfiction with a Nazarick twist. Draco, bearer of the Great Tomb of Nazarick System, is summoned into another world. In the land ruled by monsters, he begins by summoning Albedo, Demiurge, and the guardians one by one, founding a powerful dynasty in the eastern Jura Forest two years ahead of history. When Rimuru establishes the Demon Kingdom Federation in the west, he soon discovers an unsettling truth—his “older brother” is an existence far more terrifying than expected. And so begins the story of an elder brother and a younger sibling… no, an elder brother and a younger brother. What happens when two Demiurges operate in the same world? What sparks will fly when two true vampires, Shalltear and Luminus, finally meet? This is a tale of slow-burning, hell-level early development, grand schemes behind the scenes, and the collision of two monsters destined to rule the world. Please read with patience. --------------------------- Join my Patreon now to get instant access to the next chapters!

In the infinite reaches of the Void, one race is universally feared and hated: the Void Monsters. These cosmic cannibals don't just conquer worlds; they harvest them for growth, a brutal existence that puts them at war with every sentient race—and viciously against each other. By an act of cruel fate, an ordinary Earthling soul finds himself reincarnated as one of these despised creatures. Now he must survive a life defined by ceaseless war and suspicion. A monster among monsters and an anomaly among the stars, his path is one of ruthless ambition as he struggles not for redemption, but for unparalleled power, eventually becoming the first Void Monster in history to ascend to the terrifying Eternal Demon realm.