(Revulsion. Fear. Longing.)
He tries to break it down.
First the feeling, raw and terrible agony, of losing his friend — and a lovingly rendered image of his own body, broken and mangled and dead-eyed, just in case Aryu’s death isn’t enough to really understand.
Then the awareness of that feeling multiplied by thousands — he can’t even imagine millions. Millions of people losing their oldest friend or the one they cherished the most or the person they took care of or their new love, just like him, opening that terrible void in someone a million times over, the knowledge that each one of them feels it as acutely as he does, that his pain is no more important than theirs in the end no matter what he feels.
He imagines watching them mourn, one at a time, the icy sinking in his gut from the shame and the guilt and the anguish of knowing that he failed everyone he ever could have known as deeply as you can, the desperate sorrow just from seeing it happen even to a stranger. He imagines having to explain it to them, one by one — I’m sorry they died, all the people you love the most, but I thought that my loss was so much more important than yours. I thought that a chance for my happiness was worth killing your child.
He imagines Aryu’s face, if he learned.