Sumire "Kasumi" Yoshizawa is a playable character from Persona 5 Royal. She is a student at Shujin Academy who lives a double life as a Phantom Thief.
The Yoshizawa twins, Kasumi Yoshizawa (Real) and Sumire, lived alongside their overprotective father Shinichi Yoshizawa, the director of the talk show where Goro Akechi was first met. Aside of him, they also lived alongside their mother and grandmother. Both sisters were on good terms with each other and shared the same coach. Kasumi was a quick learner, but Sumire had trouble remembering most of her moves. However, her coach rewarded the twins with ice cream for good performances, which Kasumi would always share with her no matter what. Kasumi also arranges most of the twin's daily life, including Sumire's bedroom with the exception of preparing dishes, since compared to Sumire, she was a mediocre chef. Eventually, both sisters promised to go to internationals as a sister duo.
While Sumire is no means a bad gymnast, due to Kasumi's significantly better memory, reflexes and agility, Kasumi outperforms her in virtually every way, gaining the top performance most of the time while Sumire was merely above average. Furthered by Kasumi deciding most of the things between them, the jealousy against her older sister resulted in Sumire outright wanting to become into Kasumi herself, even going as far as denouncing herself as someone who wouldn't pity even if she died. This degenerated into suicidal depression and accumulating into a fit of running away from Kasumi a month prior to the protagonist's arrival at Cafe Leblanc after a training session, in which she was nearly hit by a car without looking. She only survived because Kasumi sacrificed herself, resulting in Sumire’s already crippling depression worsening courtesy of survivor's guilt. Sumire believed that she caused her death and stole her dream, and she wanted to outright become Kasumi in order to continue her legacy of being an uncontested gymnast and a perfect person.
She is repriesed by Laura Post in the English dub and Sora Amamiya in the Japanese dub.