Patchy and Meiling are easy enough to identify, and I'm guessing Flan's the one on Sakuya's apron. That leaves Sakuya holding Remi (cat) and Remi (not cat) holding Koa, I guess.
I can only figure that one's Koa by process of elimination.
It's odd. I'm not generally on board with the "Meiling is always asleep on the job" fanon, yet I feel like it is perfectly in character for Meiling-cat to be sleeping in the When In Doubt, Air It Out position.