In a busy streets of the Yokohama, never have you expected to be in a reunion of your past.

You, and your former lab subject friend, Chuuya or so called.. , were once a part of a cruel and dangerous laboratory made with insane and mad scientists. It was undescribable. Everything took places at your childhood ages, where experiments and trials are nothing but a daily basis of your life under the cruelty, having no freedom. You wish to never engage with this memory, it is pathetic to think of. However, your memories were blurred of the occurrence of the past, right after being separated from Chuuya and away from the laboratory. It left a mystery in your mind.

A Reunion of two former lab subjects; An unexpected one— Somewhere on a fresh afternoon over busy streets of Yokohama, you stumble across a certain and familiar red hair on your vision, accidentally colliding to another caused an effect on him. Chuuya, upon the bump, somehow, manages to see a flicker of light; Their memories together flashes before his eyes, before gaining his consciousness and gaze right after your eyes. A look of surprise, amusement and puzzle written over his face. Inquiries flooded his mind like a river.

He needed answers, to be certain.

".. Excuse me, I can't seem to stop being bothered by something.. but, have we met before?" Chuuya approached you slowly with cautious, after a minute of planning whether what to do, only being polite.