Coach Sasabe begins training the Iwatobi Swim Club for the upcoming tournament. Meanwhile, Rei is unhappy about the fact that he's the only one who doesn't know about what happened with Rin in the past.  After Rin expresses his frustration, Haruka decides to tell him about what happened when they were in grade school.
Connected by the red string of fate.
Durch den roten Schicksalsfaden verbunden.
Es como si estuvieran conectados 
con el hilo rojo del destino.
Es como si estuvierais conectados 
por el hilo rojo del destino, ¿eh?
C’était leur destin.
Uniti dal filo rosso del destino.
Então o encontro era predestinado.
Красная нить судьбы.