The girl Shiki met in the library was the same girl that he had seen riding on the back of Sasajima's bike. The book she left behind has a marker stuck to the page on building quiz bowl buzzer systems. Is she involved with quiz bowl? As Shiki is thinking about all his, Mari tells him they're having a joint quiz bowl practice with another school today. That school turns out to be Miyaura High, the team that claims Mikuriya as a member!
I should've told them to wait for me 
when I went to the bathroom.
كان عليّ أن أجعلهم ينتظرونني
.حتّى أخرج من الحمّام
Hätte denen sagen sollen, sie sollen
warten, bevor ich pissen war.
Tendría que haberles dicho
que me esperaran.
Tendría que haberles dicho
que me esperaran.
Ils auraient pu attendre
que je finisse…
Avrei dovuto chiedere agli altri di aspettarmi
mentre andavo in bagno.
Devia ter pedido que me esperassem
 na volta do banheiro.
Надо было попросить их подождать меня...