With Ren's support, she gains the strength to rise above her pain and joins the Phantom Thieves in their efforts to restore the original reality. In the final arc of the game, her delusions are broken and the weight of the truth pushes her to accept Takuto Maruki's ideal reality.
Traumatized by the recent death of her older sister, she copes with the survivor's guilt by deluding herself into believing that it was "Sumire" who died, and that she was "Kasumi" instead. She is an honors student in Shujin Academy, Ren's junior and a talented gymnast.
Sumire Yoshizawa is the Faith Confidant of Ren Amamiya in Persona 5: The Royal, and later, the Phantom Thief Violet. This profile contains major character and story spoilers for Persona 5: The Royal.