"Byousoku 5 Centimeter" is a great masterpiece anime by Makoto Shinkai, Very beautiful and heart-filled artworks. Great, deep, emotional storyline. One of the greatest anime. It truly shows the values of love and friendship.
Plot Summary: Tono Takaki and Shinohara Akari are close friends who, upon graduation from elementary school, are parted because of family movement. Their deep feelings for each other keep them in contact, but they worry they may not meet again. Then, one day, Takaki decides to visit Akari.........This is a movie in three parts that follows the thoughts and relationship of 2 young people as they meet and part, both from their point of view and from people around them.
The song name is "One more time, One more chance" by Yamazaki Masayoshi
Lyrics link: http://www.pireze.org/blog/?p=232