Niijima Palace is a location in Persona 5.
- Available: October 29
- Deadline: November 20
- Owner: Sae Niijima
The protagonist is shown infiltrating the Casino and when spotted by a human security guard they transform into Shadows. When the protagonist tore off their Masks, Demons erupted from their bodies. The protagonist escaped by shattering a glass window, when the alarm set off and he was immediately surrounded by the police. The protagonist and the Phantom Thieves of Hearts are shown marching towards the Casino. Later in the game, it is revealed to be the Palace of Sae Niijima, born from her jealousy of everyone close to her and her cynicism over the increasingly obvious corruption in the police department. Progressing through the area requires coins that are won by playing casino games set up by Sae's Shadow Self, who blatantly rigs them. The Phantom Thieves must figure out ways to cheat the otherwise impossible challenges without her noticing. In the survival ending paths, by the time the Phantom Thieves infiltrate the Palace, they have long realized Goro Akechi is a mole and take advantage of the Palace's overlay of the police station to trick him. This makes it the only Palace in the game not destroyed by the Thieves.
The true form of Shadow Sae's treasure is never shown. In the survival ending paths, Ryuji hands over an empty suitcase to the protagonist in order to trick Goro into believing that they are genuinely reforming Sae's heart.