I need someone who can understand Japanese or atleast tell me what this song is or where it's from.

I found it when looking for something on Your The Man Now Dog. It sounds nice, but depending on what I'm thinking of or how sleepy or lonely i feel or what im looking at that moment, it sounds kinda sad, and makes my tear ducts feel. is it a song about love or something?

http://www.mediafire.com/?ntc2z4xodcc

I edited it some using Auda City to make it sound better. I'm not sure if it's the whole song though.

EDIT: the name of the folder "Mystery songs", is because that's where i put songs that i don't know the name of. don't worry, it's just that one song in there.