After the breakup of his middle school swim team, Ikuya decided to get stronger on his own and not rely on anyone. But then Haruka, breaking out of his freestyle comfort zone to swim in the individual medley, tells Ikuya, "You're not alone." As the two race side by side, Ikuya hears the sound of Haruka swimming, and suddenly he feels something in him changing...
I think I finally understand why 
I kept clinging to swimming.
أظنّني فهمتُ أخيراً لماذا ظللتُ
أتعلّق بالسباحة
ich habe nun endlich verstanden,
wieso ich so am Schwimmsport hänge.
creo que por fin entiendo
por qué seguía nadando.
creo que por fin entiendo
por qué seguía nadando.
credo di aver finalmente capito 
la ragione per cui ho continuato
Acho que finalmente entendi
por que continuei nadando.
Думаю, я наконец понял,
почему так цеплялся за плавание.