Real Account is a popular social media app that allows users to connect their accounts to reality. From socializing to purchasing items in the real world, the app has become essential to daily life, particularly for second-year high school student Ataru Kashigawa. He uses Real Account to escape reality, finding a sense of belonging and connection with his followers, whom he regards as friends. However, Ataru's perspective on friendship shifts dramatically when he is drawn into the virtual world of Real Account and compelled to join horrific death games with ten thousand other users. These are not standard online death games, as dying in the Real Account world results in the death of both the user and all their followers in reality. To complicate matters further, having no followers guarantees death. As Ataru begins participating in these games, he uncovers the existence of Yuuma Mukai, a teenager who looks exactly like him. This revelation introduces a twist to the events. Betrayed by his so-called friends one by one, Ataru is left with only one anonymous follower. In this virtual world where a single follower can mean the difference between life and death, Ataru must survive and complete the games to return to the real world.