I always work at night, and sometimes I can't forget a feel - I feel so lonely in a cold and cheerless room. In that case, If I didn't concentrate on my works, It would had many equivocal things that I couldn't see them. Do you regconize that whole song is feeling in the dark, but it has a bright melody? My girl friend is far away from me, but the distance between us are meaningless. I can feel that she always stay by my side, and she is my encouragement to pass over any bad things. The title has a special meaning: whenever we get trouble or danger, we always have someone by our side. I hope you like "sacrifice" because of the tunes and there is always someone around you.