High-school deathmatch zero dawn

High-school deathmatch zero after his father disappearance and the late passing of his mother, shinzu and his brothers ganix and kalino moved to an orphanage.As time pass they receive a letter from they father will come for them but it never happen. as a stranger man went to the orphanage with an proposal they can't refuse as they attend the prestigious crimson high school to battle other students with strange weapons know as raiki to they death