
I'm sorry, I might get a lot of hate from this but I been through a similar situation to Jirou and I had to leave. I loved that person dearly. However, Toue keeps breaking Jirou's heart. I know that they'll most likely have a happy ending but IRL sometimes you have to let the one you love get their shit together. Sometimes you have to go find someone who would treat you the way you deserve to be treated.
Yuri definitely has PTSD. Unfortunately, a lot of people who suffer with PTSD don't want one discuss it and tend to push the people they love away because they don't want to bother them. They also tend to used alcohol or other drugs to easy the pain. Yuri needs to discuss what he is going through with Jaerim. Communication and therapy helps PTSD.