A very nostalgic piece from Sugata Sanshiro (姿三四郎), a Japanese animation film broadcasted on FuijiTV back in 1981.
The opening song of this film is called Season (シーズン) by Talizman.

Looked around everywhere but no luck. All I was able to find was this youtube video with the short version of the song:
http://www.youtube.com/watch?v=Ppg4ohKiYg0

As far as I know, the only album that seems to have this song is "Talizman Super Best" and is super ancient.
Talizman Super Best: Talizman: Amazon.ca: Music (http://www.amazon.ca/Talizman-Super-Best/dp/B000FGG26K)

Nobody seems to have the album or the movie ripped yet, they're hard to come by even for buying :(
Hope somebody out there have access to it and could provide a decent rip, I'm begging here.