Madoka Sowa is a Japanese voice actor from Tokyo, born on October 17. She began her career after a period with the Production Ace演技研究所, and is currently active as a freelance talent. Her professional debut in anime occurred in 2013, a year in which she secured her two most prominent roles to date.

In the ONA series Miyakawa-ke no Kūfuku (The Miyakawa Family's Hunger), a spin-off of the popular Lucky Star franchise, Sowa voiced the character Yukina Utsumi. Yukina is a shy elementary schoolgirl and classmate of Hikage Miyakawa, known for her gentle demeanor. In an interview, Sowa discussed the challenges of this role, noting that she had to work diligently to produce a voice that was healing and calm for the character, a task made more difficult because her own personality as a child was the opposite of Yukina's quiet nature.

Also in 2013, Sowa was cast as Nova Luminous in the television anime I Couldn't Become a Hero, So I Reluctantly Decided to Get a Job. Nova is an anime-original character who works as an employee at the Leon King Store, a magic shop, and is characterized as a natural airhead. Sowa's performance contributed to the series' ensemble cast. Her involvement with the series extended beyond voice work; she also participated in the associated promotional activities, including the web radio program titled I Couldn't Become a Hero, So We Reluctantly Decided to Start a Radio Show., which ran from September 2013 to February 2014. Furthermore, she performed on the series' character song album, Extra Revolution, released on November 27, 2013. As a member of the group KANBAN娘., which featured several female cast members, she sang the song Extra Revolution (Character Version). She also specifically contributed to the track Welcome to Leon Royal Capital Store! alongside fellow cast members Keisuke Koumoto, Maina Shimagata, and Kumi Takaragi.

Information regarding Sowa's professional activities outside of these 2013 projects is not detailed in available records. Her known filmography and associated media appearances are centered on her debut roles, and she is not noted for frequent collaborations with specific directors or recurring cast ensembles beyond these initial productions. Her status as a freelance voice actor suggests she continues to work in the industry, though specific roles after 2013 are not publicly cataloged in the available sources.