The idea of Shion looking up to him as the responsible adult zombie here was...something. R's expression was about as slack as Shion's, with a faint undercurrent of "oh crap" hidden in there because he wasn't cut out to be a babysitter.

"Water," R corrected Shion, trying to be patient and gentle. Might as well try to get him used to speaking. It beat moaning "brains!" all the time (although that would come later. Hopefully. Assuming they didn't starve to death out here). "T. Tuh! Water."

R stared down at Shion, his shoulders stiffened into a permanent hunch against the sun beating down overhead, all that crushing blue. Trying to teach Shion how to speak again was a distraction he could use, R watching as the snake's blood began to dry out quickly on the new corpse's mouth. Come on, you can do it.