[There's a considering pause, where he can't help the way his expression turns sad when his tears spill again, nor when the grip on his shoulder eases only because he's lifting a hand to touch Shiro's face, wiping away at his tears tentatively as he can see how overwhelmed he is as it is.]
Shiro. [He sighs out, shakily, softer still, repeating his words seriously despite that.] It isn't your fault.
How could this possibly ever be on you, when you'd never have done any of it? It wasn't you.