it’s an AI exclusive character at the moment, just like Star-Crossed Parasoul. they’ll become avaliable in relics eventually, just currently only AIs have them.
Right now they are still tinkering with the SAs of the characters. They have the palettes ready but they are working on figuring out if the SAs are going to be useful when released.
Expect some of the SAs to possibly changed based on how they feel internal testing is going.