The story is kinda fucked up since the 2nd betrayal of Kusaka. It feels too fabricated and dramatized. Should've killed Kusaka a long time ago and move on with the next story and next character, but no, the author keep the idiotic MC with all his bullshit brains going.
But still, my opinion is insignificance and probably irrelevant at this point. And if you like some thriller, action and mopping drama with never ending fabricated story, here's one for you.