Telomeres テロメア, teromea?), also known as Soul Tickets, are the parts of the Reyvateils that rule over their life span. While the Telomeres in human DNA have the effect of determining the life span of the cells, the Reyvateils' Telomere are completely different things, and besides both having the same name due to their functions, they don't have anything else in common. In the case of the Reyvateils, the Telomere are located in the hexagonal section of the hinges in the Triangular Nuclear Loop, which serves as the Heart of the Reyvateils, and they determine how long the Reyvateil will live. In other words, they are like a countdown timer that determines when the Reyvateil will die. However, they don't serve as a power source, or anything similar.