Athletes in the Entertainment Industry

[Entertainment + cool writing + single female protagonist + dog food] The male protagonist was fighting mma in his previous life and died accidentally. As a high school student in another world, he was surrounded by the system. The song "First Dream" is a piece of entertainment that shocked the world. Become a national team member and win glory for the country in the international arena. The high school beauty chased her from high school to college. His dual identities as a composer and an athlete kept him in trouble. The overlord of the entertainment industry and the god of sprinting. This is the author's first time writing a book, so please bear with me!