University student Akira Jonogasaki, having completed his school advancement procedures, suddenly witnesses a mysterious flying object in the sky and loses consciousness.

When he awakens, he finds himself in a place he doesn't remember at all, an educational institution called "The Academy." Reflected in the Academy's mirror is not his adult male form, but that of Arisugawa Saki, a high school girl living at the Academy.

“Ah, no, please don’t mind me. My memories are a bit muddled right now. I feel like my dreams and reality are all mixed up. It's as if another version of me was living in a different world.”

Akira is confused by this world and his current appearance. He tries to deny his past, believing his previous world was a dream, and live in the present. However, by meeting Shirase Mirai, his first ally in this world, it becomes clear that both this world and his previous world are real. And that Akira has become entangled in a strange phenomenon known as a “Drifter.”

Much about the “Drifter” phenomenon remains unexplained, and currently, Akira's chances of returning to his original world are extremely low, with no known method. However, this place called “The Academy” is at the forefront of academic research, where mages gather.

Akira Jonogasaki becomes desperate to return to his original world. And what will the magic of this world truly smile upon...?