I don’t find the spoilers as agonising as everyone does. I may be heartless - even though I cry my eyes out very easily - but this piece of puzzle kind of explains everything. If you think about it, it makes sense. It was the worst choice someone could make someone to do and Gintoki made it. But what could he do? He was helpless and so were all of them.

It’s not the event that makes me cry and it’s not the ninja that cuts onios either. It’s the idea itself.

The fact that Gintoki lived until now with this burden, laughed, cried and fought with all his might, not losing his power to love and his compassion while this event kept replying everytime he was alone, now that’s agonising indeed.