The Kansei University track team runs into Tokyo Sport University at Lake Shirakaba, where they're holding their training camp.
Sakaki insistently provokes Kakeru over his past actions.
Pushes to his limit, Kakeru grabs ahold of him, but his friends come between them before anything can happen.
Later they begin their grueling practice, but Kakeru can't stop recalling heavy memories from his high school days: 
a cruel past that pushed a group of elite runners to their breaking point.
Recalling how he chose his own destruction, Kakeru agonizes over his past.
That night, the sky is full of stars. Haiji appears next to Kakeru as he's hanging around by himself...
Because of a moment's decision,
I wasted three years of their effort.
بسبب انفعال لحظة، أهدرتُ 3 أعوام من جهودهم
Weil ich mich nicht im Griff hatte, …
Por una decisión impulsiva,
desperdicié tres años de su esfuerzo.
Por una decisión impulsiva,
desperdicié tres años de su esfuerzo.
Un geste d’une seconde
In un attimo, per colpa delle mie azioni,
Pois uma única ação minha desperdiçou
três anos dos esforços de todos.
Своим спонтанным поступком я
перечеркнул три года их стараний.