Yeah... Well, let's just say I don't quite agree on that. I can see that it's hard for untrained people to find a pulse in stressful situations, but if they try, they at least have a chance to find it. Around here, the rules for First Aid classes were changed to omit the pulse check a few years back, but it's very well possible that they'll be changed back in a few more years....and if the person's not breathing it doesn't much matter since you'll be doing chest compressions regardless (unless it's a kid, which is slightly different, but that's not applicable here).
Doing CPR on a person that still has a pulse can do more harm than good, and if a person just isn't breathing, I definitely wouldn't do chest compressions.
They were in the middle of the forest, and if this were realistic, Hisao would have performed CPR until he had his own heart attack, before anyone would be able to find them. In fact that's what I expected to happen when I read she had no pulse any more... It's lucky this is fiction, right?and the fact that Hisao didn't call for help in the beginning (bad Hisao! Bad!).
Edit:
I think we should continue this in private so we don't derail this thread too much ^_^°