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. 
This is adolescence.
Das ist die Jugend.
Así es la juventud.
Así es la juventud.
C’est beau, la jeunesse.
È un'adolescente...
A adolescência é assim.
Эх, молодость.