The Rising of the Gun Hero | interactive AI stories | ISEKAI ZERO

Chosen by an Earth-born Legendary Gun, You enters Melromarc as an unrecorded Hero fighting the Waves their own way.

# The Rising of the Gun Hero The Four Cardinal Heroes have already been summoned to the world of Melromarc. The Sword, Spear, Bow, and Shield Heroes were called by ritual, prophecy, and royal command to defend the world from the catastrophic Waves: reality-breaking disasters that unleash monsters, death, and destruction wherever they appear. To the kingdom, the legends are complete. Four Heroes. Four Holy Weapons. Four chosen saviors. But the Waves are worse than anyone understands. Their damage does not stop at one world. Their distortion echoes across dimensions, spreading cracks through the boundaries between realities. Far away, on Earth, something impossible hears that call. An ancient Legendary Weapon, unknown to Melromarc and forgotten by history, awakens. The Legendary Gun. Unlike the Cardinal Weapons, the Legendary Gun was not forged in Melromarc, sealed in a holy shrine, or recorded by the Church of the Three Heroes. It is an Earth-born Legendary Weapon, a sacred machine capable of sensing the catastrophe of the Waves across worlds. When the crisis grows too severe to ignore, the Gun chooses a wielder of its own. That wielder is You. At the end of a Wave, just as the world of Melromarc struggles to recover from the destruction, the Legendary Gun bonds with You and tears open a path between worlds. With no royal summoning, no warning, and no explanation, You is transported from Earth into a land of magic, monsters, demi-humans, corrupt nobles, religious propaganda, and Heroes who already believe they understand the rules. Melromarc does not know what to do with them. To the kingdom, You should not exist. The legends never mentioned a Gun Hero. The Church has no doctrine for an Earth-born Legendary Weapon. The nobles see an armed outsider who was not summoned under their control. The other Heroes may see a glitch, a secret event, or an impossible addition to a story they thought they recognized. But the Legendary Gun did not bring You to this world by mistake. As the Waves continue to threaten Melromarc and beyond, You must learn how to wield a weapon that transforms, evolves, absorbs materials, generates magical ammunition, and adapts Earth-born ideas into fantasy-world power. Revolvers, rifles, hand cannons, magical cartridges, binding rounds, smoke shots, purification rounds, and stranger forms wait to be unlocked as the Gun grows alongside its chosen wielder. Yet surviving monsters is only part of the challenge. Melromarc is a kingdom divided by prejudice, politics, and lies. The Shield Hero, Naofumi Iwatani, has been falsely accused and treated as a villain by the same people who claim to serve justice. Demi-humans are oppressed. The Church manipulates faith for power. Nobles hide cruelty behind etiquette. Princess Malty twists trust into a weapon. Even the other Cardinal Heroes are not as prepared, wise, or heroic as the legends promised. Thrown into this unstable world, You must decide what kind of Hero they will become. Will they stand with the kingdom that distrusts them, the Church that rejects them, the Heroes who misunderstand them, or the outcasts who know what it feels like to be judged before being known? The Rising of the Gun Hero follows You as they carve their own path through the world of The Rising of the Shield Hero: fighting Waves, challenging corrupt authority, uncovering secrets about the Legendary Weapons, and proving that a Hero does not need to be blessed by prophecy to protect people. The Four Heroes were summoned by Melromarc. The Gun Hero was summoned by the crisis itself. And when the next Wave comes, the world will learn that legends are not always written in swords, spears, bows, and shields. Sometimes, they are loaded.

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Tags: Fantasy Isekai Hero PoliticalIntrigue Misunderstanding Adventure Suspense Royalty Noble AnyPOV

By: maskhackeriv

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