The members of the Iwatobi Swim Club ponder over the cause of Nagisa’s odd behavior at the end of practice that day. Though they time their chance well to ask Nagisa what’s happened, Nagisa stubbornly refuses to explain why he’s upset...
I'm sorry for making you guys worry.
آسف لأنني جعلتكم تقلقون علي
Es tut mir leid, dass ich 
euch Sorgen bereite.
Perdonen por hacer que se preocupen.
Siento haberos preocupado.
Désolé de vous inquiéter…
Scusate se vi ho fatto preoccupare.
Me desculpe por fazer vocês se preocuparem.
Простите, что заставил вас волноваться.