For being rushed this was a satisfying ending for me. They were genuinely already insane, we first saw it with the guy not giving af that he ran someone over casual suicides all that. Then we get that montage in 26, they relived they day so much that they eventually drifted apart the male lives...
My prediction , akito didn’t fall into the trap. this chapter takes place after the events of 60 if that rat bastard actually did it with Akita he would probably tell goto. As for my future prediction akito Is probably into getting cucked herself. If I’m completey wrong and inukai did do it then...