[From the moment Yu says "I want to be clear about something" his stomach drops out and his eyes widen. He knows what this is about. He doesn't want tot think about what this is about, but he knows even before Yu continues. He's shaking his head even with every sentence.

Those words are on the tip of his tongue, but he knows. He knows Yu won't let him get away with saying it, and he knows that he made something of a promise to Dipper to slow down and stop trying to get right in the line of fire. And Yu is also right. Hiro will feel responsible, just as he feels mildly responsible for other things.]

That doesn't change that we're the ones who did it, Yu. [He shakes his head again.] I should have thought it through better. And even so, now you're the only one who's going to pay the price. Tell me something. Tell me how any of that is fair.