FF7 Crisis Core - Worth Playing?

[Chrkeller]

FF7, the original, is one of my favorite games of all-time.  I really enjoyed FF7 remake.  I haven't played FF Rebirth, waiting on the PC version.  Long story short, Crisis Core Reunion worth my time?  Any expectation going into it?  I am considering grabbing it via Steam sale.  I just don't know much about it and I don't know if it is worth it.