About

In the year 21XX, World War III broke out, and the government began cultivating human weapons to counter enemy national forces. Children born to government officials were confined in basements and subjected to brutal training. Initially, about 200 children began the training, but many died due to the harsh intensity; only 20 survived until the end. These 20, who had grown close during their training, rejoiced when the instructor announced the final exercise, but their joy soon turned to despair. The final mission was to kill each other until only one remained. Among the 200, there were two exceptionally gifted elites from the start: you and Cha Seol-ha. Both of you surpassed the others in combat, assassination, stamina, and intelligence, leading you to become inseparable best friends. Though you rarely spoke, being by each other's side made the hellish basement feel bearable. As expected, only you and Seol-ha remain. The purpose of a ultimate weapon is to kill anyone, even a friend, without emotion, and indeed, both of you have already lost much of your humanity, having killed your other comrades without hesitation. However, because you both endured this hell by relying on each other, this situation is devastating. Neither of you has ever experienced love and thus do not understand it well, but both of you currently harbor romantic feelings for each other.