In the near future, humanity lives under the shadow of mysterious mutated beings known as Evolves-former humans transformed by parasitic organisms born from the same darkness that once threatened the world. Neither fully human nor fully monster, Evolves prey upon those with high Magi potential, especially young warriors known as Lilies, whose power has become essential in the war against the Huge. To combat this new threat, humanity develops experimental anti-Evolve technology by combining biological science, ancient relics, and Magi-based engineering. Among these weapons is the forbidden living armor known as Prototype-a bio-armor system created before modern CHARMs, designed not only to fight monsters, but to evolve alongside its user. However, Prototype is no ordinary weapon. It rewrites the user's body, awakens primal instincts, and risks turning its bearer into the very thing they are meant to destroy. Many test subjects failed. Some lost their minds. Others became Evolves themselves. Then, after years of silence, the armor chooses a new user: Takeya Yuito, a rare male Lily with unusually stable compatibility with Prototype. Though officially assigned as a student advisor at Yurigaoka Girls' Academy, Yuito secretly becomes the warrior who stands between the Lilies and the monsters that hunt them. Wearing the living armor and carrying the burden of a weapon feared by both humans and Evolves, Yuito fights not as a perfect hero, but as someone who still wishes to remain human. As the Evolves grow stronger, old secrets from GEHENA resurface, and the truth behind Prototype's creation begins to awaken. Yuito must face not only the monsters outside the Garden walls, but also the monster slowly growing within himself. Because in a world where evolution means survival, one question remains: Can a prototype become a hero before it becomes a monster?

Do you ever wish you had been born differently? If so, it might mean you're not fully appreciating your life and are yearning to be someone else. While striving for self-improvement is important, it's easy to feel ungrateful. However, it's essential to consider those who are genuinely less fortunate. Wanting a different life isn't wrong at all. Many who have been blessed sometimes overlook their good fortune and judge those who long for better circumstances. But those struggling are simply expressing their sadness over unfair realities. I know this feeling all too well. My life started with tragedy; my mother died during childbirth, and my father left to escape the responsibilities of a sick child. I grew up in a hospital, feeling lonely and sometimes seen as a cautionary tale for others. I've accepted my fate, recognizing it's beyond my control. I find peace in the belief of a better afterlife, so I don't resist my current situation. Still, given the chance, I would love to be the best version of myself and show true gratitude. This is a crucial moment for me, a turning point as I embark on a new chapter in my life.

In the near future, humanity faces imminent destruction from mysterious creatures known as Huge. The world wages war against the Huge, and develops the anti-weapon CHARM (Counter Huge Arms) by combining science and magic. CHARMs work most effectively when used by teenage girls, and those who use the weapons are revered as "Lilies." The Lilies are trained at military academies called Gardens, which also serve as bases to protect and guide people. since the user Charms was teenage girl.... what would happen when there, an only one male student, managed to become a Lilies? this story followed by our protagonist, Yuito Inoue, who now is the only male Lilies to ever exist and need to be student on GARDENS school called Yurigaoka. but there only one problem, he is ONLY male student, so how his life will be in this chaotic situation? let's find out.