An alternate story of "Robotics Notes" focusing on the Frau route. In 2019, childhood friends Yashio Kaito and Senomiya Akiho are members of their high school's robotics club, which faces the threat of being disbanded. Akiho is determined to save the club, viewing it as her final connection to her older sister, a roboticist. Akiho relies solely on Kaito, yet he is more preoccupied with the game "Kill Ballad Online." However, Kaito's fixation on Kill Ballad might prove useful for their robotics club, and they will encounter other allies along the way!