 He pushes Hiro in the way of the falling Slushy (which was Past Hiro's fault) and it spills all over him instead of Kimiko.Hiro suddenly teleports back to the present and finds a slight change; as a result of him getting hit with the Slushy instead of Kimiko, Kimiko never grew to hate Ando and the two fell in love at the carnival.As a result of this, Hiro decides his new mission is to change past mistakes even though he doesn't have full control over his time travel power yet.