My Hero Academia Crossover Fanfiction

Rejected thirty times by the mage academy, Kael is nothing; no power, no name, no future. When he steps in to save a stranger, it earns him only a brutal beating… and a death sentence. Thrown from a cliff, Kael should have died. Instead, something ancient answers. A power no one has seen in centuries erupts from within him. A voice, old as fire and ruin, claims him. You are mine. Now the boy everyone cast aside may be the most dangerous thing in the realm and the very magic that chose him might destroy him before anyone else can.

Among them a boy with sharp eyes and untamed hair, no older than sixteen. Lin Dong. Whispers rise around him. “The failure of the Lin family…” “His father lost everything to Lin Langtian.” But Lin Dong says nothing. His jaw tightens, his fists curl. “I’ll make them remember my name.” The gong strikes. The test begins. One by one, disciples unleash their Yuan Power, glowing faintly with light. When Lin Dong steps forward silence. He places his palm on the stone pillar. Nothing. No glow. No tremor. Just cold stone. Laughter ripples through the crowd. Lin Langtian, his older cousin, smirks from afar already a martial prodigy, already chosen by the clan elders. But Lin Dong’s eyes don’t lower. There’s something burning behind them something feral. That night, he runs into the mountains, fists bleeding, shouting into the dark. “If the heavens won’t give me power, I’ll take it myself!” Lightning flashes and the earth trembles. From beneath the ancient roots, a strange stone talisman rises glowing with ancient runes. The air hums, trees bow, and the mountain itself seems to breathe. Lin Dong stares at it, breathless. The talisman pulses once… twice… then melts into his palm. His eyes widen his veins blaze with golden light. And somewhere, deep within the realm of spirits… something wakes up. “Finally… someone worthy.”

Five centuries ago, a man named Yuta consumed mermaid flesh, granting him immortality but condemning him to a life of solitude. Now known as Kaiza, he wanders the world searching for a way to end his curse. His journey leads him to a mermaid colony, where he discovers their dark secret: they maintain their youth by consuming human flesh. When Kaiza rescues Mina, a young girl raised by the mermaids as their next meal, he is forced to destroy the creatures in a desperate act of survival. Bound by their shared immortality, Kaiza and Mina embark on a perilous quest to reclaim their humanity. Along the way, they face supernatural dangers, ancient mysteries, and moral dilemmas that test their resolve. While Kaiza struggles with centuries of guilt and loss, Mina’s innocence and curiosity bring hope to their journey. Together, they uncover the secrets of mermaid lore and confront the sacrifices required to undo their curse. As they grow closer, Kaiza and Mina must decide: How far are they willing to go to become human again? And what will they lose along the way?

The second part of the hero series: Vincent Miles: And the Fist of Fire. The adventure continues for Vincent Miles and his heroism.

Leon Thournefield was an unnamed hero that was labelled as a villain in the books written for the elites. He prevented the destruction of Earth and yet was fooled and left by people's hero elites. Fed up of his long life he wishes to come back to Earth and feel the pleasure again. He returned but something different changes in his body. Leon Thournefield, 1199 years old in present time reverted back to his fifteen year old appearance. But why everyone is so old? What the heck?

System! I always dreamed to have a system, to get out of my boring and shitty life. Surprisingly the day of my birthday I got one, but I was not the only one, the whole world received a system, and the people who were born in the 3rd day of September got a gift pack, and I was one of them. But the shocking thing is that we got a system notification that the earth will be invaded by another dimension in two weeks time and everyone should prepare for it. ------ Author's note ------ Hi everyone, I want to warn you about this novel there will be a lot of mistakes, English is not my native language (I am only using Google Translate), and I am not a professional writer. I am just an amateur of novels and want to put my idea to life. Please if you see a mistake kindly tell it to me in a comment and I will correct it. Thanks for your understanding.

Accused of rape, Lin Feng is disowned by his parents and cast aside by his sect and city. Through immense luck, he summons a Primordial Origin Dragon, a very sassy and annoying spirit beast that constantly insults his ancestors. But with Primordial Origin Dragon, more beasts begin to step into Lin Feng's life. A cat, a snake, and even what looks like an elf! “Once I get my revenge and destroy my enemies, I'd build a sect of my own, ensuring a true reign of justice.” Follow Lin Feng on his journey to become the greatest of all cultivators.

That night, everything was destroyed. The sect that had raised Arga was stormed by hundreds of unknown assailants, leaving nothing but piles of corpses and blazing fire. He nearly perished in the massacre, had it not been for a powerful warrior named Barata who saved him. From that day on, Arga swore an oath: blood would be repaid with blood. Under Barata’s guidance, Arga mastered countless mystical arts, transforming into a respected warrior. Yet the path he walked was far from righteous—the knowledge he gained drew him closer to the shadows. Even so, his resolve never wavered: to hunt down those who destroyed the Golden Step Sect. One by one, secrets were revealed. His enemies were not mere bandits, but a coalition of great sects that had long envied Golden Step’s supremacy. And behind it all stood a traitor from the past… now allied with the most powerful dark force in the martial world. Thus began Arga’s journey—a path that would lead him to challenge the mightiest warriors, tear through the veil of betrayal, and confront the devil in human form: Jalak Seta.

Inspired by the hero stories. Retto decided to become a knight and someday acquire the title of hero after defeating the demon king. While working hard he fell in love with a cheerful girl named Yunis. Yunis represents every color in Retto's world. The two fell in love with each other. Until the tragedy happened in their mission. Yunis was taken by the demon king Ennel. Retto was killed but mysteriously found himself in a dungeon. A dungeon is unknown to anyone. In a dungeon, only people chosen by the dungeon can enter. Retto's journey of finding a way out in the insane dungeon to save Yunis started.

Kael Voss was nobody until the rune burned into his palm and an ancient god chose him as its vessel. Now the Void devours the realm, armies march under a traitor’s banner, and his own power threatens to erase who he is. With only a battle-scarred knight at his side, he chases three relics across shattered lands. No mercy, no weakness, no second chances — just the cold weight of a world that must be saved or broken by his hand.