"Night of Seclusion" CCFF7-R OST 47

This song plays when Zack realizes he has to fall back and hide until cover of night in order to protect Cloud from the Shinra army.

You can purchase Crisis Core Final Fantasy VII Reunion here: https://ffvii.square-enix-games.com/en-gb/games/crisis-core/#buy-now

As of the release of this video, no official soundtrack for Crisis Core Reunion has been released (to my knowledge). Buy the original Crisis Core soundtrack here: https://music.apple.com/us/album/crisis-core-final-fantasy-vii-original-soundtrack/266734037