"Showtime! Uta no Onee-san Datte Shitai" (Showtime! Even the Songstress Wants to Do It) is an adult-oriented anime series that follows the romantic relationship between Shouji Fujimoto, a widowed single father aspiring to be a picture book author, and Minami Takasaki, a singing idol on a children's educational show. The series explores the challenges they face as they navigate their secret romance, given Minami's public persona and the industry's prohibition of romantic relationships for idols.