It appears to be on-demand:

5/30 763, via KIX
5/31 763, non-stop
6/3 763, via KIX
6/4 763, non-stop
6/6 772, non-stop
6/7 763, non-stop
6/10 763, non-stop
6/11 763, via KIX
6/12 772, via KIX
6/14 763, via KIX
6/17 772, via KIX
6/21 763, via KIX

So we have both 772 and 763 via KIX and non-stop. I'll be monitoring for changes ;-)