[All of a sudden Crona is in visible pain and Robert honestly doesn't know how to react for a second. Then his doctor-engrained knowledge starts to kick in, and he tries to stabilize Crona's arm, attempting to both dislodge the testy, toothed sword and prevent Crona doing further damage to his skin from the sword's jaws (?).
It's possible neither of these things work, but either way Robert isn't going to take this well.]
[Action]
It's possible neither of these things work, but either way Robert isn't going to take this well.]