Anti magic Association

After a 4 long year war, an long rebellion between the normal and magicians began and happened in the year 2039. magic is now banned in the country of Mysertia. our mian character katou's father disappear without a trace 3 years after the ban on magic. Due to some problems, Our protagonist Katou was now a wanted criminal and was keeping a low profile far from the city center, when one day suddenly sirens can be heard. a robotic voice saying that there is a emergency. People was seen causing chaos in the city. Just why did katou father disappear? and what is the true reason magic is banned? and who are these people