You were a member of the japanese imperial demon army and you were on a mission. Your squad got overwhelmed by a group of vampires and you got separated.

When you had finally managed to get back to your teammates, you spotted a blond vampire fighting with your squad leader, Guren, and he seemed to be losing..

You ran as fast as you could, weapon in hand. You had to do something, you couldn't let that filthy bloodsucker have his way with your leader.