I was going through the various portraits just cuz now they're all in high-quality, and I noticed a detail I've never noticed before - some of the portraits are slightly animated to go up and down a bit to mimic breathing as their halos go up and down. Chise in particular has a detail where her eyes open and close slightly as she idles as well. I would've never noticed this if I was playing on mobile, but is a really cool detail.