So there has been talk that Hishiro has Asperger's which i think (to put it nicely) not true but it has led me to think better on Hishiro issues and such i would let to give my 2 cents on the various psychological problems Kaizaki has in an effort to start a interesting conversation.
1. He is still grieving. Despite being 2 years since his senpai death he has never really gone through the grieving process and thus is stuck, i believe this is cause by the lack of empathy of his previous work place and because he was never surrounded by any people that acknowledge his loss he was never able to truly mourn her. I might be wrong but i have never even seen him cry over her death even thought i caused him so much pain.
2. He still blames himself. This explains itself and it is obvious to see but what is important to mention is that this causes him pain and even makes him somewhat self destructive in a effort to punish himself for his "mistake".
3. He has PTSD. I just want to say that i hate the definition on PTSD because it tends to be a very broad definition of various issues that people can have and it has been show to be very often misdiagnosed, that being said. It is clear that he suffered a traumatic event when he found his senpai dead but the way he doesn't like to have things too tight around his neck or even how he chokes on interview might be the result of stress caused by that traumatic event thought the latter might also be caused by the other 2 issue or a combination of the various issues.
So any opinion to share?
Anything you guys disagree or agree and would just like to add?