What kind of sickness does the main character have?
Well it's not really mentioned until the latest chapters, anyway if you don't mind the spoiler(is it tho?) you can continue reading below.
He suffers from coronary sindrome,
arrhythmia and panic attacks. In his case, stress is not really well received, especially when suffering from heart diseases, so it all adds up to his pain. If I didn't misunderstand he also had surgery in the past, also heart related.
That jackasses death was the least satisfying thing in the entire story. There has to be more. It cannot end in such an anti-climatic way.
The second couple are boring and the uke is dumb and childlike. I have to drop this before I tear my hair out
The story was horrifying and traumatic, but also well laid out. I felt the trauma of both characters. I found myself wondering what would happen next.