Prince of the Sorrows by Kellen Graves

Without an academic endorsement to make him valuable to the high fey, Saffron will be sent back through the veil to the human world. The place he was traded from as a changeling-baby, and a place he is terrified of. And while getting an endorsement shouldn't be impossible, it's hindered by the fact his literacy is self-taught, using books stolen off of Morrígan Academy's campus of high fey students. When mistaken identity leads to Saffron learning the true name of brooding, self-centered, high fey Prince Cylvan, what begins as a risk of losing his life (or his tongue) becomes an opportunity to earn the future he wants. In exchange for an endorsement, he and Cylvan form a geis where Saffron agrees to find a spell to strip power from Cylvan's true name. While Prince Cylvan doesn't know Saffron can barely read, Saffron is determined to meet his end of the deal in order to remain in Alfidel—or, maybe, just to remain by Cylvan's side, as affections grow stronger every night they spend alone in the library together. But as other human servants soon fall victim to a beast known only as “the wolf”, Saffron realizes he has embroiled himself in a manipulative reach for power like he never anticipated—and even Prince Cylvan cannot be trusted. Between the wolf, uncovering forbidden magic, and his growing feelings for the prince, Saffron will have to decide which is most important to him—his endorsement, the lives of his friends, or the prince’s life and wellbeing.

Herald of the Witch’s Mark by Kellen Graves

Saffron finally has the one thing he's always wanted: a chance to attend school. To be able to do so alongside Prince Cylvan, even while glamoured as a high fey and pretending not to know one another, Saffron is eager to finally experience the education he's always dreamed of. But the expectations of being a perfect fey lord are suffocating enough, and are only made more difficult as the unfettered rowan magic in his body runs wild. Outside of the emotionally-charged nosebleeds that come whenever he's overwhelmed, he's able to keep the magic subdued--until one unfortunate confrontation outside of the school, where it manifests in the form of a nightmare he never thought he'd have to witness again. He desperately needs help understanding how to control his new magic, but there's only one person he knows who can offer mentorship: the stranger who appeared in his hospital room after the events on Ostara. Between acting a high fey, pretending to be courted by Cylvan as strangers, the unexpected difficulties of attending school for the first time, and managing the ancient magic running wild in his veins, Saffron has no choice but to trust Ryder Kyteler who can skip through the veil with ease, and who has been gathering disenfranchised humans to teach them arid magic on the outskirts of Avren for years. Otherwise, the new, violent manifestation of Saffron's magic may hurt the people he cares about most.