@rkkn Doudou is hiding behind him crouched down because she's extremely nervous, Aoyama is then crouching down to speak to her on an even level, which is recommended, don't talk down to nervous people. Murisaka is on his toes because otherwise Aoyama's head would have hit his crouch and her face would currently be at his crouch rather than between his legs.
I've been in a similar situation, it really feels awkward and you want to move but at the same time you feel that doing so will break the mood.