Thing is, from what I can remember. Kanna's situation was explained, and she was put on hiatus. Made no appearances at all, just... disappeared. Sort of. While Aika on the other hand keeps on working as much as she can, and even after she was put on a break in July, she has still done things like photoshoots for goods and taken part in an album recording etc etc. It's fun to compare the two one time, but seriously? It gets old fast.