Final Fantasy 7 Rebirth co-director says making Sephiroth playable was the 'best way to allow the player to understand his point of view'

"We wanted the player to feel more empathy with Sephiroth, and that's why we believed that making him playable was the best way to create a bond with the user. After the flashback, in fact, the players begin to witness the corruption of the Soldier. Sephiroth goes from being the legendary soldier to becoming an evil creature."