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.
Your little sister is a member 
of the Iwatobi swim club, right?
Deine kleine Schwester ist ein Mitglied des Iwatobi Schwimmclubs, oder?
Su hermana menor es miembro del club 
de natación Iwatobi, ¿cierto?
Tu hermana está en el club de 
natación del Iwatobi, ¿verdad?
Votre petite sœur fait partie 
du club d’Iwatobi, n’est-ce pas ?
Tua sorella minore è nel club 
di nuoto dell'Iwatobi, giusto?
Sua irmã caçula faz parte do clube de
 natação da Escola Iwatobi, não é?
Твоя сестра — член клуба Иватоби, да?