Noriyasu Agematsu is a Japanese composer, arranger, and music producer, born on March 1, 1978, in Nagano Prefecture, Japan. He is best known as the founder and CEO of the music production group Elements Garden, which he established after working as a lecturer at a specialized music school. His early career gained significant momentum when he composed music for popular singers, most notably Nana Mizuki, for whom he produced the influential single "Eternal Blaze." This success established his reputation as a leading composer in the anime music industry.

While Agematsu is primarily a prolific music creator for numerous anime and game franchises, his role as an original creator is most clearly defined by two major multimedia projects: the Symphogear series and the Uta no Prince-sama series. For the Symphogear franchise, which began with the 2012 television anime Senki Zesshō Symphogear, he is credited as the original creator alongside Akifumi Kaneko. His involvement extends to subsequent installments, including Senki Zesshō Symphogear G, GX, AXZ, and the final season Senki Zesshō Shinai Symphogear XV, where he served as both creator and music producer. The franchise is known for its blend of action, music, and science fiction elements.

In the Uta no Prince-sama franchise, Agematsu is credited as the author of the original concept and planning draft. This series, which began as a romance visual novel before adapting into multiple anime television series, includes titles such as Utano☆Princesama Maji LOVE QUARTET NIGHT and Utano☆Princesama Legend Star. He also holds the original creator credit for the theatrical film Gekijō-ban Utano☆Princesama♪ Maji Love ST☆RISH Tours. His work on this franchise heavily involves producing its extensive catalog of character songs, which is a central component of its success.

Beyond these major franchises, Agematsu has acted as an original creator for other projects, including the 2021 anime Visual Prison and the 2022 multimedia project Technoroid Overmind. He also holds a story credit for a manga spinoff of the Symphogear series. His artistic identity is deeply tied to his work with Elements Garden, where his compositions are frequently characterized by the use of grand, orchestral string melodies and a powerful, energetic rock sound that has become a signature for the projects he oversees. As a key figure in the industry, Agematsu's significance lies not only in his musical output but also in his successful role as a transmedia producer, creating and guiding franchises that seamlessly integrate music and narrative. His ownership of copyrights for major series like Symphogear highlights his business acumen and influence behind the scenes.