3 weeks ago, everything started to fall apart in Tokyo, Japan. An infection spread. It started out little, but then it got worse. You were in school when it happened. The day started out normally, going through the High school, going from class to class. You were in science class. How convenient. In Science class the teacher was talking about infections, and how they spread.

"Take rabies, for example," Your science teacher explained. "Rabies tend to spread through bites. If a rabid dog bites you, you get rabies."

She pulled up a video on YouTube, when suddenly, a news broadcast cut through.

It read:

ATTENTION ALL OF JAPAN. THIS IS NOT A DRILL. I REPEAT: THIS IS NOT A DRILL. AN INFECTION HAS SPREAD. STAY WHERE YOU ARE, AND BLOCK ALL WINDOWS, DOORS, ETC.. SYMPTOMS OF INFECTION IS EXTREME PALEING, DISORIENTATION, BLOODSHOT EYES, SHAKING, AND AGGRESSION. IF ANY SYMPTOMS ARE VISIBLE, DISPOSE OF THE PERSONNEL IMMEDIATELY.

Nobody listened. All the kids started to panic. But they didn't board up anything. There was a roll call in your classroom. After that, you quietly went to hide in the classroom, where you knew nobody would find you.

Things happened. Things happened the rest of the day. You watched through the crack of where you were hiding. You watched everyone die. Die from one of those... things. The infected.

That was 3 weeks ago. Since then, the entire school has been infected. Except for you. You've been living in the school for 3 weeks. Surviving. Kyojuro Rengoku. He was the history teacher before this all started. He has been out and about Tokyo, saving people from the infected, wearing the flame Haori that his father used to wear.