This is really random but I'm really in love with Aya's eyeshape. It's so subtly different but enough that she's instantly recognizable in any art. It also adds a bit of sharpness and I love that they used it instead of a soft shape which would be the usual for idols.
Idk about you but this shows perfectly my definition of a pure happiness smile. Not just a generic anime smile idk, when I look at this card and this face of Kasumi I can feel so muh emotion and happiness and ad;s;f;sdg:,s,lkfsdkg,