Moon: Continued at the Battle Tree. Won 20 more battles in a row which meant I got to face Red once more. Beat him without major problems this time as well. Along the way, I also scouted two trainers. One which was leading with a Mega Charizard Y, and another which was leading with a Greninja. Perhaps one of them will help me in the Multi line later on... we'll see. I'll continue on the Super Single line a bit further to see if I can find other useful trainers to scout.
Also obtained the 4000 FC for the recent Global Mission. This brought my Festival Plaza up to rank 114. While I'm not focusing on leveling it up anymore on this game, I'll participate in future Global Missions as well because I want the FC and other rewards from them.
Sun: Continued with the Ultra Beast quest. Got to battle Mina which was fun, she was easy to beat as expected. Then I continued with more Ultra Beasts. First out was Xurkitree. The first one was easy to get, I caught it without major problems, and it had the right Nature on the first try too! The second one was harder to get. It had the wrong Nature on the first try, then it struggled to death on the second try. I finally got it with the Nature I wanted on the third try. Looking back, I should have prepared more for Xurkitree, not sure which strategies could be useful against it but I guess I could have thought about something. Guess it's too late now, but if I should have to catch more Xurkitree in a future game, I will need to think of a different strategy.
Once both Xurkitree were caught, it was time for Kartana. Another situation where I am glad I raised my Aegislash, it was very helpful here as well. These four paper-swords were quite easy to get, mostly thanks to their high capture rate. The fourth one also had the right Nature on the first try which was great, while the first three had it on the second attempt.
When I had them, I continued to the last Ultra Beast. I had to battle Nanu first, then I could go to the lower level of Resolution Cave and catch Guzzlord. It may be tough and strong, but my Aegislash was designed specifically to be helpful for catching it, so there wasn't much it could do. Once it was down to 1 HP and out of PP for Heavy Slam, I sent out my Haunter to put it to sleep with Hypnosis. Looking back, I could have used an X Accuracy on Haunter to buff its Accuracy in addition to the X Speed I used to raise its Speed as it was at a rather low level, but it is too late for that now. Anyway, I got the Guzzlord I wanted on the fifth try. It had the wrong Nature three times and struggled to death once, then it finally had the right Nature. With that, I had caught all the Ultra Beasts.
Went to Aether Paradise to get a lot of money and do the last part of the Ultra Beast quest, so it is now complete. Next up, I'm planning to catch/obtain all the remaining legendary/special Pokemon on this game.
I obtained the 4000 FC from the Global Mission here as well. That was enough to make my Festival Plaza here grow to rank 80, which is really great. It has since grown a little further and is now at rank 81. One or two more successful Global Missions, and it should be at Rank 100.