The only that bugged me was that the author made it sound like if they could get married Jun would feel more secure. That's dumb half the people that get married get divorced. They just need to communicate and get through their problems. I'm glad Subin ended up with Jun I was pretty paranoid the entire time thinking he'd up with the friend. If I felt paranoid it's understandable Jun didn't feel secure.
Sensei must be a fan of Pep Guardiola to be attempting to make a left back a playmaker. I honestly hope Ashito improves more than the coach thinks and is able to play CAM. Even as a defensive midfielder would work if the point is have him control the entire team. He could be a deep lying playmaker there.