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 want you to join the swim club.
Ich will, dass du 
dem Schwimmclub beitrittst.
Que tu rejoignes 
le club de natation.
Beh, vorrei che entrassi nel club di nuoto.
Eu quero que você se junte 
ao clube de natação.
Нужно, чтобы ты присоединился
к клубу пловцов.