In episode 9, there are these three references I didn't get:
The first one is around minute 5, when Tomoko goes to see Yuu-chan at her uncle's café. She sees the names of two cakes ("Tarte Chiboust au Caramel" and "Bijou des Rois"), and then says this:
The second is around minute 15, when Tomoko is cleaning her stuff up. She wonders why her brother is trying to be better than her at everything, then says the following:
She then says "I'm gonna make him cry for this."
The third one is around minute 17, when Tomoko is cleaning her stuff up and finds the cicada shells. She remembers why they were there, says "A memory best left forgotten", and then:
What do these three different situations refer to?