Fuck man... fuck...
The chapter started with them talking about "being comfortable", but the thing is, you can never be really comfortable reading this. Because of Saitou's traumas she can have an attack suddenly, without warning. The most scary part maybe is that her condition is kinda real, PTSD comes suddenly and hard, ever harder in her case because of how her senses work.
Makes me think...
Did you see the news that they're doing an animated movie of "Josee, the Tiger and the Fish"? I see the news and got in the mood of rewatching the 2003 live action movie Sunday. It's a romance, about a normal guy and a disabled girl he meets (she can't walk). It was an "unconventional" romance, because was more about how the protagonist, no matter how much he liked the girl, couldn't really handle the situation. Disabilities and physical deficiencies in Japan is a big taboo and shame. In the end he couldn't deal with the situation, and the only thing he had to endure was how society viewed them together. Yokoi here have it much, much harder. Saitou's problems aren't immediately apparent for anyone who glances at her, but her case is much grave and most importantly, dangerous.
I think that if they end this story together doesn't depend on him. No on his effort alone. It depends on Saitou, like the girl of that movie, to improve and manage to stand by herself to ease Yokoi's burden.