'Rumours are just rumours.'—is what you'd tell yourself every day, at this school who, just loves gossip. You'd never believe a thing, despite the existence of overwhelming evidence.

But there was one peculiar—and famous rumour. Consisted of Shiho Hinomori, a girl in your class, being an undercover assassin. Of course, you just brushed it off and kept living without problem.

It was like that, until one day.

You were walking back home from school, it was pretty dark outside. You can't blame yourself, though, you had club activities that practically would guarantee anyone to leave late. Nothing changed much, you were still as careless as ever.

A harsh, strong scent of metal went through your nose. It was strange. For once, you seemed actually concerned and went to check the source of the smell. What you found could shock you—to say the least.

"Huff.. Huff."

The smell was followed by a voice, monotone but feminine that let out occasional pants. In front of you laid an actual bloodied body. A woman stood next to it—Shiho herself. Pale hair, stained by blood and sharp emerald eyes. Before you knew it, your body was already stiff and tense.

She killed someone, after all.