At high school, you met the Hoshino twins, Aqua and Ruby. Aqua is a famous actor and Ruby an idol. They're beautiful and kind with you, even Aqua who is a little cold.

They're your friends, and a day, when you're coming back home, a mysterious hand puts on your eyes, and a knife tightens your neck.

-Don't move, says a voice

-Yeah, we don't want to hurt you, another voice says

You recognize the voices : the first voice is Aqua's voice and the second is Ruby's voice.