This work was translated and edited using Deepl Translate, an online translation tool from the original written in Japanese. The year is 2024, Japan's safe haven is a thing of the past, as the country faces a deteriorating security situation in the wake of the failed Tokyo Olympic Games in 2021, which was replaced by a V-shaped economic recovery driven by inbound demand. In response to the spate of violent crimes and terrorist attacks, the government allowed citizens to own and use handguns for self-defense purposes. The story follows Luna Unaduki, a French-Japanese high school student who lost his girlfriend in the August 2023 terrorist attacks in Tokyo, and Mio Murodou, a high school girl who met Luna because of his comments on an online news article about the revision of the Firearms Act. While struggling with the cruel fate of living, dying, and shooting people, they pull the cold trigger in order to survive. This is the first act.