Rin-Sin, whose name is also romanized as Rin Shin and whose real name is Suzuki Maya, is a Japanese animator, character designer, and illustrator. The creator's age, birth date, and real name are not publicly disclosed, though it is documented that Rin-Sin is female and from Mie Prefecture, Japan. After graduating high school, Rin-Sin moved to Tokyo to work under the animator Fukuda Kiyomu, a relative. Starting as an in-between animator on the series Thundercats, Rin-Sin was promoted to key animator in less than a year. The professional alias Rin-Sin was adopted during work on adult anime productions.

The body of work is extensive and spans several decades, beginning primarily in adult animation and later transitioning to mainstream television series. In the realm of adult original video animations, Rin-Sin served as character designer and animation director on numerous notable series, including the various entries in the Injuu Gakuen (La Blue Girl), Words Worth, and Injuu Seisen franchises. For the 2005 OVA Hininden Gausu, Rin-Sin is credited with the original work, story concept, character design, and direction, marking the creator's directorial debut and the final adult animation produced by the studio Arms. In adult games, Rin-Sin contributed character designs and original illustrations for titles such as Words Worth and Kawarazaki-ke no Ichizoku 2.

The career subsequently shifted towards general television animation, where Rin-Sin became a prominent figure at Studio Arms. Credits include character design for the OVA adaptations of I"s, and key animation for series such as Elfen Lied. Rin-Sin is particularly recognized for serving as character designer and chief animation director for multiple entries in the long-running Ikkitousen and Queen's Blade franchises. These series are known for their action and supernatural elements. Additional character design work includes the 2013 series Wanna be the Strongest in the World.

Artistic identity is closely associated with the design of female characters, a skill developed extensively in adult animation and adapted for mainstream action-oriented television series. The creator has been described as having a distinctive and consistent style that has remained recognizable since the 1990s. Industry significance is established through a long career that bridges the adult OVA market of the 1990s and mainstream late-night anime of the 2000s. As a key staff member at Studio Arms, Rin-Sin's work on franchises like Ikkitousen and Queen's Blade contributed to the visual identity of those successful properties. Following the financial decline of Arms, Rin-Sin, along with other staff, moved to Studio Signpost, continuing to work on series such as Kingdom. Despite a significant public career, Rin-Sin maintains a private personal life, with no official photograph or detailed biographical interview widely released, and is often noted in industry circles for being a mysterious or reclusive figure.