If the speed of cherry blossoms falling is 5 centimeters per second, how long will it take for two hearts to get close? When they were young, Takaki (voiced by Kenji Mizuhashi) and Akari (voiced by Yoshimi Kondo) were inseparable good friends, but soon, a huge gap stood between them: Akari transferred to another school, and Takaki also moved to the distant Kagoshima with his parents' job transfer. Before moving, Takaki took the Shinkansen to meet Akari. After a long wait, in the vast snow, the two embraced affectionately under the withered cherry tree, gave each other their first kiss, and promised to see the cherry blossoms together next time. Time flies, and the two never met again. Although they kept searching for each other in the crowd, it seemed to be in vain. Later, they each had their own lives, but occasionally they would dream of this immature and beautiful relationship when they were 13 years old, and then they realized that the word they couldn't say back then was love.