Even during summer vacation, lone wolf Horikita would rather remain locked in her room studying than interacting with others. One day, Ayanokoji invites her to visit the pool with some of the others.
An incident during the first term 
resulted in her helping out Class D,
أدّت حادثة في الفصل الأول لمساعدتها للفصل د
Hat Klasse D nach einem Vorfall
im ersten Semester unterstützt,
Un incidente en el primer semestre
provocó que ayudara a la clase D,
Un incidente en el primer semestre
hizo que ayudara a la clase D,
Elle nous a aidés
pour l’incident du 1er trimestre,
Un incidente durante il primo trimestre
l'ha portata ad aiutare la classe D,
Um acontecimento no primeiro 
semestre a fez ajudar a Turma D,
Во время происшествия в первом
семестре она помогала классу Д,