Trusova (15 + 15 = 30) Panenkova (15 + 13 = 28) and Tarakanova (15 + 11 = 26) are locks for the final. Only two more Russians have a chance at the final (because they will have only sent five ladies to two events). Samodurova (15) is scheduled for Italy. Kostornaia (15) will likely replace Guliakova (13) at Italy. Both Samodurova and Kostornaia only need to be on the podium to clinch a JGP final spot.
Japan will get at least one spot in the final.* Yamashita (11 + 13 = 24) is still in contention and Japan's big guns Kihara (13) and Araki (13) are scheduled to skate in Italy. If these two skaters could knock one of the Russians off the podium and go 1-2, then two Japanese skaters would qualify to the final. If Russia goes 1-2, and the Japanese skater is 3rd, she'll be in a total score tiebreak with Yamashita.
*Unless something crazy happens like Young You (9) or Ye Lim Kim (9) winning gold and both Russians still finishing in the top 4 while Japan finishes no higher than 3rd.
I just want to see all the Russian ladies, pairs and dance teams together so I can stick in my mind who's who. Right now, Trusova, Tatankanova, the dance team S/E with their voidy FD, and Boikova/K are the only ones who stuck in my mind, but I missed most of the last three JGPs.