*the easiest way to deal with this is to rush when he thinks he has control of the situation
he fired twice so he only has 4 rounds left if its a 6 shooter either 38 special or 357 magnum most likely 38
if just 2 or 3 students rush his ass he wont be able to take em all out and japanese authorities are actually quite good
if you got shot once by a 38 you would likely survive since japan is also pretty good in terms of their medical field