Let him what? What was the other's fear there? The sane part of Shirogane thought that getting out of there and coming back with some sort of weapon might be a sensible idea, if he even came back at all.

The part of Shirogane that was controlling his actions saw nothing wrong with this. "Do your worst! I won't let you, either!" Not that he was sure what the other was going to be doing...but the part of his brain that was still in some hazy dream had seen things like this before, and that part of him knew that this meant only one thing--a fight. He rushed at Warsman, clearly intending to throw a punch.