Futaba Sakura is one of the main characters in Persona 5, and a member of the Phantom Thieves of Heart, where her codename is Oracle.
Make a left then go straight to find another room to trigger a cutscene with Sakura. Prepare to fight Mot, Lamia, and Naga. After clearing the site, the cutscene will continue. Head to the side to climb the sarcophagus. Approach the Anubis statue bearing an orb to take it. Now get to...