The 4 girls come watch the basketball game that their Sasaki is a member of. Kana has been secretly in love with Sasaki, whom Haruko ends up making out with. This triggers Kana's NO to activate, but she notices that and runs away. 
You don't want
to take the first shot.
Der, der zuerst losschlägt, verliert.
Si la agredes primero, perderás tú.
Si le pegas primero, perderás tú.
Frapper la première,
c’est s’avouer vaincue.
Non volevi fare la prima mossa, eh?
Не стала первой наносить удар.