 The title "5 Centimeters per Second" comes from the speed at which cherry blossoms petals fall, petals being a metaphorical representation of humans, reminiscent of the slowness of life and how people often start together but slowly drift into their separate ways.The movie marks the first time Shinkai has worked closely with a full staff of animators and artists.As in Shinkai's previous works, Tenmon composed this film's soundtrack.