As I understood it that was his way of dealing with the trauma of being raped. His mind couldn't handle how horrible it was or couldn't comprehend it so it twists itself into believing ha was attacked by ufos instead.
Like when he was attacked in the park, it's easy to miss but if you look at the darker panels you can see how he is approached by a group of men, how his briefs are laying on the ground and how someone has grabbed his hand and is pushing him down. And then in the brighter panels you can see how he is tied up end experimented on by aliens, which is what his mind makes him believe happened instead.
But he still kind of remembers, he just twisted the truth. So to the police he said the aliens inserted chips into his peehole and butthole and that they put something in his mouth. And later when he talked with the nurse he said they inserted a tube in his peehole and a stick in his butthole. Clearly depicting rape.
And later when his school nurse rapes him he says something along the lines of "oh, so you were one (alien aka. rapist) too"
His friend understands this which is why he apologises for not realising what he has been going through earlier. The nurse was the first one (alien aka rapist) he saw so he didn't know.
I think what he means by that is sora also experienced rape as from the second to the last panel says that the first time he(MC) saw an alien was on his second grade which I think was sora being raped which also explains why sora believed him before(said from the early panels) and why sora cried when the doctor was arrested prolly his friend's incident triggered his trauma
I wanted to see if anyone else interpreted it this way as well, but when Riku called out for his mom while getting raped by the sensei, I got the feeling that Riku had been raped by his father since he was young? It said Riku had seen those UMAs multiple times since second grade (so he has been raped repeatedly since then), and the first time we're introduced to Riku seeing these UMAs is in his bedroom... and then him calling his mom for help...idk if I'm reading it right and was wondering if anyone else thought the same.
Can someone pls explain the 4th chapter??
Like why the boy was seeing ufos and stuff?