Event 1: He dies. I won't be shedding tears over it, but we will have to dump the body somewhere outside the building; any unnamed chemical waste dump in Yokohama should work. No reason to offend the businesses in the building with a loss of face.
Event 2: He lives. After we get our information, I'm more than happy to let him crawl back into the shadows.
I'll make the first aid test, should that be necessary.