Ever Dark Academy, Vol. 4 by X. Aratare

None of the Immortals can escape their pasts.

While Grayson eagerly embraces being the Immortal Ashyr, others like his former best friend reporter Rachel Willis and his mother desperately want him to be the young man they once knew.
Caemorn’s many slices continue to haunt him… and everyone else as they strive to survive now that the Vampire King has returned.
While Balthazar likes being thought clever with use of his Eyros gift, he shies away from fully embracing it. And his Kaly one? He doesn’t even realize when he’s using it.

And Ryder remembers one very special–and dangerous–Childe: Legion. The Childe of his Heart and his Nightmares.