Shinryaku RPG

During an ordinary day at Tohru's high school, chaos erupts as video game monsters invade. Tohru is thrust into the role of a hero but is unable to stop his friends and classmates from being turned into robotic NPCs. He is not the only one who retains free will, and he may be able to change the situation with the help of others. However, this possibility is complicated by students who have become villains and might hinder his efforts.