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.
What's his problem?
Was hat der für ein Problem?
C’est quoi, son problème ?
E quello che ha?
Qual o problema dele?
Что это с ним?