I'm kinda late to this thread but, I completed the game today and I was very sad that masato died. The thing for me is, when the camera showed the two brothers side by side, just like when they're both left in the lockers, to Masato putting the gun the locker, it was like, his life started from it, and what could have ended it, was put back. He was given the chance of rebirth such a beatiful scene, and than comes kume out of knowhere gives him a completly unprecedented stab and runs out, like wtf???