Reincarnated With a System to Protect My Crush
Rei Arata was an ordinary high school student from Mikagura City — quiet, observant, and hopelessly in love with his crush, Aisha Kurozawa. She was the kind of girl who made the world feel softer just by existing. He never confessed, never planned to. To Rei, loving her in silence was enough — until the day assassins came for her.
It happened in an instant. A scream. A flash of metal. Without thinking, Rei threw himself between Aisha and the bullet meant for her. As the world dimmed, all he could think was one desperate wish: “If there’s another life… let it be one where she remembers me.”
But fate had other plans.
Rei wakes up in a cold morgue, surrounded by flickering lights and the faint hum of machines. His heart isn’t beating — at least, not the way it used to. His reflection shows a face he doesn’t recognize: pale skin, surgical scars, lifeless eyes. The name tag beside him reads Kai Isaragi, a failed experiment from the secretive Akesha Research Bureau. Somehow, Rei’s consciousness has been transferred into Kai’s body — a body that once belonged to a human weapon project known as System Users.
Then he hears it — a calm, mechanical voice in his mind.
[Protection System v.0.9: Initiated.]
[Mission: Protect Aisha Kurozawa.]
Now living as Kai, Rei must navigate a new life under a false identity, guided by an emotionless AI that measures every decision by morality and consequence. Each act of compassion unlocks Pure Modules, granting him light-based powers; each act of violence feeds Corrupt Modules, making him stronger but less human. His every choice becomes a battle — not against enemies, but against the machine inside him.
Yet the greatest battle lies within his heart. To Aisha, Kai is a stranger — the mysterious transfer student who always seems to appear when danger looms. But to Rei, every glance, every smile, feels like a piece of the life he lost. The closer he gets to her, the harder it becomes to remember where Rei ends and Kai begins.
As hidden organizations rise, corrupted System Users appear, and the truth of his resurrection unravels, Rei must decide what it truly means to protect someone. Is it love, or is it control? And if saving her means losing himself… will he still choose to protect her?
He died once for love. Now, fate has given him another body — and one final chance to protect the girl who never knew his heart.