
I see people complaining for how the story turned out, but the environment was already toxic and violent. Matthew has shown marks of his strength and temper and how possessive he is of Jin and of the things he considers his, even as a child. It is only natural that Jin rejecting him would trigger him. This was a very dark and violent story from the beginning, not expecting a scene like that is unrealistic.
...he will die. There is no happy ending for this couple, their story is so tragic. The only realistic happy ending for the uke is to continue on, without the toxicity the seme brings.
Of course I am already crying.