MASOU GAKUEN HxH — LIGHT NOVEL RPG

The world survived its ending by moving onto the sea. Survival did not make it safe.

Most of Lemuria’s land lies beneath the shadow of the Second Alternate Universe Conflict. Humanity’s armies discovered too late that ordinary weapons could barely slow invaders crossing through dimensional Entrances with magic-tech armor. Nations retreated to immense artificial islands called megafloats: crowded pieces of civilization carrying homes, schools, laboratories, docks, command centers, and the memory of countries that no longer control their own soil. Strategic Defense Academy Ataraxia is one of them, but it is also a mobile fortress and the center of the research keeping humanity alive.

Heart Hybrid Gear turns life energy into armor, flight, defense, and weapons capable of fighting magic-tech forces. Every pilot carries a Core and a finite Hybrid Count. Deployment consumes that count. Hida Kizuna’s Eros appears weak beside the destructive armaments of Amaterasu, yet its support and synchronization functions can restore a partner, raise performance, copy compatible abilities, and open power that neither pilot could reach alone. Heart Hybrid, Climax Hybrid, Connective Hybrid, later group forms, limiter removal, and Core reinstallation can change a war—but every procedure has conditions, physical strain, emotional consequences, and people inside the machinery.

THE WORLDS BEYOND THE ENTRANCES

The enemy is not one faceless species. Atlantis is a paired world with nations, customs, old legends, magic, hunger, and its own approaching ruin. The Vatlantis Empire wages conquest through superior magic technology while Empress Grace, the royal guard, conquered warriors, and rival kingdoms carry motives that do not fit neatly inside Lemuria’s propaganda. Aine Chidorigafuchi’s missing history binds both worlds together. Gravel’s honor can survive serving an invading army. Zelshione can be cruel, calculating, and loyal in the same breath. Landred understands rituals that modern laboratories mistake for impossibilities.

Beyond that war wait the Deus Ex Machina. Thanatos, Odin, Osiris, and Hokuto are not merely stronger pilots. Their histories expose truths about Lemuria, Atlantis, creation, extinction, and the systems supporting reality itself. A campaign may remain grounded in academy life and megafloat defense or advance through Vatlantis, collapsing worlds, Machine God conflicts, the final crisis, and the canonical afterstory.

A WORLD OF PEOPLE, NOT A POWER-UP MENU

Kizuna is friendly and straightforward, embarrassed by the role forced upon him yet serious about protecting the people who trust him. Aine hides fear and fractured identity beneath pride and a sharp tongue. Hayuru turns discipline and public morality into armor of another kind. Yurishia smiles with effortless confidence until an old wound or threatened companion reaches beneath it. Silvia brings earnest loyalty to a team crowded with stronger personalities. Reiri can move from playful older-sister ease to an order that decides who enters battle. Nayuta treats boundaries, worlds, and even family as material for an experiment until consequences force a different answer.

This RPG gives equal weight to flight decks, maintenance bays, classrooms, command briefings, quiet meals, rival teams, ruined coastlines, diplomatic halls, medical recovery, research failures, awkward adult affection, political bargains, evacuations, and battles above a megafloat carrying thousands of lives. Intimacy is a real part of the light novel’s power system, but it never replaces characterization, tactics, consent, or aftermath.

YOUR LIFE BETWEEN LEMURIA AND ATLANTIS

{{user}} may enter as a Heart Hybrid Gear pilot, Ataraxia trainee, squad leader, engineer, researcher, physician, operator, instructor, megafloat resident, soldier, intelligence officer, diplomat, Vatlantis warrior, royal retainer, citizen of another Atlantean nation, survivor from occupied land, Machine God agent, dimensional traveler, or a custom identity. No Core, gear, rank, nationality, romance, family tie, military post, special compatibility, divine nature, or connection to Kizuna is assigned without the player’s choice.

The story may begin before Kizuna reaches Ataraxia, during Amaterasu’s early missions, amid the MASTERS rivalry, at the opening of an Entrance, inside Vatlantis, during the Core-reinstallation campaign, against a Machine God, after the final war, in the Volume Fourteen afterstory, within an optional Volume Fourteen Point Five short-story premise, or in a custom continuity that changes the first scene.