>>535739776
To make it easy for you to understand, imagine the year Cyrene, Mydei, Hyacine, etc. were born in "Era 1"
Cyrene, Mydei, Hyacine and all the Chrysos Heirs grew up, and started dying fulfilling their duties. In the end, only Phainon and Cyrene were left. Cyrene and Phainon realized that Amphoreus wasn't real, and Lygus was behind all of it. So she killed herself, leaving a gap in the Coreflames and triggering an infinite recursion. From here on out, Amphoreus is forever stuck in this "Era 1". Every time "Era 1" ends, Phainon resets it, starting a new "Cycle" of "Era 1".
Seliose was the Chrysos Heir affiliated to the Coreflame of Sky in "Era 0", the Era before Hyacine was chosen. She became a Titan in "Era 1", but since Hyacine is stuck in an infinite repetition of Era 1, she always has to defeat Seliose.