Stephen, Wow that sucks. Assuming one or more of those flights have actually been cancelled, perhaps with the situation ANA can work with you to find a substitute flight that does not go through Korea and Japan. I doubt they would give you points back but perhaps they can find some availability and make an exception to change your route. Long shot but worth asking and if agent gives you an immediate no push it a little so that someone who can make an exception is aware of your situation. I would expect them to be more flexible if those last flights were on their metal as well.

This is the only slightly related info I could find if they do indeed cancel one of flights. https://www.ana.co.jp/en/us/amc/refe...nt/refund.html

Good luck and I hope you can find some resolution. Let us know if they work with you at all on a solution.