While HKT48 was at the Hot Stage, Sasshi called out Rena who was trying to be discreet near the backstage area, basically saying "you just came to see Babyraids (and not HKT48), didn't you?" and everyone in the crowd looked over at her. At the Hibiya and Budokan lives, there were flowers sent from Rena also, so yeah, she likes them.
I haven't seen GALETTe live since @JAM when Ayano graduated but, Akari was "support member" for a bunch of their release events and was even on one of the covers of their mini album. I like Nonoko so they're on my list.