The Iwatobi Swim Club needs one more member before it can participate in relays.  Nagisa has set his sights on his classmate Rei, who is a member of the track team.  Despite Rei's refusal to join, but Nagisa appears intent on recruiting Rei into the swim club.
I won't join the swim club.
Ich werde dem Schwimmclub 
nicht beitreten.
No entraré al club de natación.
No pienso entrar en el club de natación.
Rejoindre le club de natation ?
Non farò parte del club di nuoto.
Eu não vou me juntar ao
 clube de natação.
Я не присоединюсь к клубу пловцов.