one day made by supercell and found in the Black Rock Shooter original sound track album
title : One Day
music : ryo
vocal : nagi
Lyrics:
Red rose, how beautiful you are
Gallantly bloom forever more
Pale rose, may you never wither
I will commit myself to you
If the sky shall shower down on you
I will be the shelter through the rain
If a storm shall carry hurt on you
Let me be the shelter through the pain
One day when time goes by
A day to crumble will pass on by
Always I'll be by your side
Forever and ever, right by your side
Now sleep tight and shine bright...
