Long before the NAMC YS-22 plane crash took their lives, Riota, a 17-year-old boy, carried a dark trauma from his past. His life felt as though it had already ended, leaving him only to live through what remained. Once a gifted child, he gradually lost interest in everything. Though time helped him heal emotionally, Riota became quiet and withdrawn, holding onto only a faint sense of human care. When his older brother, a teacher, was reassigned to another school, Riota was forced to leave his old life behind. There, he met a girl named Keina. What began as a relationship formed by habit slowly grew into a mutual need. Unbeknownst to them, from the moment they met, the countdown to their deaths had already begun. This is a fragment of Riota and Keina’s lives, bound by fate. Even death and another world cannot sever their connection, for no matter how far apart they are, they will always need each other. This story is a spin-off from my main series.