Kenji Roa is a Japanese voice actor, singer, songwriter, drummer, and scriptwriter, born on January 25, 1979, in the Philippines and raised in Osaka Prefecture, Japan. He is affiliated with the talent agency Production Ace. Roa's career is marked by a rich background in music before transitioning to voice acting, and he is known for roles that often leverage his dynamic vocal range.

Before entering the voice acting industry, Roa built a substantial career in the Japanese visual kei rock scene. He began playing drums at 17 and joined the band wyse at 21, making his major debut with them in 2000. After leaving wyse in 2003, he became the vocalist for the band CODE in 2004, which was affiliated with Gackt's personal office. Following CODE's disbandment in 2008, he formed the visual kei band Virgil and the musical unit Verba-Rhythm with fellow voice actor Kazuma Horie. He has continued his musical pursuits, forming the band L.O.V.E. in 2016.

Roa's path to voice acting began when he enrolled in the Japan Narration Acting Institute, from which he graduated in 2009. He made his debut as a voice actor that same year and initially worked under the agency Aslead Company before joining his current agency, Production Ace, in 2017. His diverse performance skills are also applied in stage acting and musical theater.

As a voice actor, Roa is recognized for a variety of roles in anime, games, and drama CDs. In television animation, his notable roles include Shouta Matsudaira in Kenka Banchō Otome: Girl Beats Boys, the role specified in the query. He has also played Tomi in Blood Lad, a Security Officer in The Demon Girl Next Door, and a program director in the IDOLiSH7 series. In the realm of video games, he is known for voicing Torahiko Kusakabe in the popular I★CHU idol production game, a role for which he has also performed character songs. Other game credits include Shinobu Miyoshi in the otome game Otoko Yūkaku and the character Kyou in the game Raisa. He has also lent his voice to the OVA New Prince of Tennis as Shinobu Miyoshi.

Roa has frequently collaborated with a number of fellow voice actors across various projects. Data indicates repeated work with actors such as Hiro Shimono, Soma Saito, Showtaro Morikubo, Daisuke Hirakawa, Natsuki Hanae, and Yuichi Iguchi. This suggests established working relationships within the industry.

Beyond performing, Kenji Roa also contributes creatively as a songwriter and composer. For example, he wrote the lyrics and composed the music for the character song "Saqirlat," performed as his character for the GANG×ROCK franchise. This ability to write and compose music is a direct extension of his extensive background as a musician and band member.