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.
It's because you were swimming 
in the pool in April.
Weil du im April im Pool 
geschwommen bist.
Fue por meterte a nadar en 
la piscina estando en abril.
Esto te pasa por meterte 
en la piscina en pleno abril.
C’est parce que tu t’es baigné 
en plein mois d’avril.
Anche se è ancora aprile 
hai nuotato nella piscina...
É porque você estava 
nadando no mês de abril.
Ты ведь полез в бассейн,
хотя апрель на дворе.