She sure has some interesting habits. I probably had the same face she is making there when this happened:
So new character, Yuzurina, turns out to be the mastermind behind everything and is allegedly real imouto. She didn’t even flinch when asked for a DNA test by the other girls because she was so confident it will come out positive (which it did, apparently). One did flinch seeing Yuzurina being so cool about it though, Miyabi.
‘Sup with that?