WHAT!? What was under Yuuka's skirt that make 2 different reaction?

I'm wondering what this pic's title is trying to imply?

BrotherJohn said:
WHAT!? What was under Yuuka's skirt that make 2 different reaction?

maybe its because what happened in one of the previous pages to Marisa when she met Yuuka sulking and the words yuuka says at the last panel

I love this yuuka and wish to see more of her.

lol it's like yuuka just raped marisa by just flashing her

フリー = Free
フリ = 振り = pretense/appearance

marisa: almost nosebleed
cirno: full on nosebleed

They are about to do the most dangerous job ever, but were spoiled.

Mental rape.