Ria Kurumi was born on March 15, 1997, in Kanagawa Prefecture, Japan. Growing up in a suburban area near Tokyo, she was a quiet and observant child who excelled in academics, particularly literature and art. She attended a local high school where she participated in the drama club, developing an early comfort in front of an audience. After graduation, she briefly worked as a receptionist at a small clinic before deciding to explore opportunities in entertainment.
In early 2017, Ria Kurumi was scouted by a talent agency while shopping in Shibuya. Initially hesitant, she took several months to consider the offer, eventually signing with a prominent production company. She made her adult video debut in June 2017 under the label "Premium" with a film that highlighted her natural shyness and reserved demeanor, which quickly distinguished her from more assertive performers. Her early works focused on story-driven scenarios that played to her ability to convey vulnerability and emotional depth.
Ria Kurumi stands at 158 cm (approximately 5 feet 2 inches) with a slender, petite build. Her measurements are listed as B85 (C-cup), W56, H88. She is known for her shoulder-length black hair, large expressive brown eyes, and a fair complexion that gives her a youthful appearance. She often incorporates subtle, natural makeup in her films, which enhances her girl-next-door appeal. Fans and critics alike note her ability to switch from demure to intense depending on the scene, a versatility that has kept her in steady demand.
Within her first year, Ria Kurumi won the "Best New Actress" award at the 2018 Adult Broadcasting Awards. She became a regular collaborator with director Kenji Mizoguchi, known for his cinematic style in adult films. By 2020, she had starred in over 70 titles, including several that topped sales charts in Japan and were licensed for distribution in the United States and Europe. Her performance in "The Quiet Neighbor" (2020) received particular critical attention for its nuanced portrayal of loneliness. She also ventured into gravure modeling, appearing in photo books and magazine spreads for Young Gangan and Weekly Playboy.
Outside of filming, Ria Kurumi is an avid reader of mystery novels, with Keigo Higashino being her favorite author. She trains in modern dance twice a week and has mentioned in interviews that the discipline helps her control body movement during scenes. She maintains a low-key social media presence, preferring to share snapshots of her cat, a calico named Mochi, rather than personal details. She has stated in published Q&As that she values privacy above all, rarely giving in-depth interviews about her private life.
Ria Kurumi is frequently cited in discussions of the "new wave" of Japanese adult actresses who treat their work as a serious craft rather than mere exploitation. In 2021, she was invited to speak on a panel at the Tokyo Adult Expo about maintaining mental health in the industry. She has also been a brand ambassador for a Japanese lingerie line, though she has turned down mainstream acting roles to focus on her niche. Her consistent work ethic and professional reputation have earned her long-term contracts with two major studios, ensuring she remains a familiar face in the genre.