My Dearest Angel, Crowned By Sunflowers

Silver, the Serilian prince, was an outcast his whole life. Unlike his welcoming older brother Alaric he couldn't feel anything for most of his life, making the folk think of him as something that isn't even human. Even though Alaric gets to bring him to feel some emotions, Silver always wanted more. Deep down he always longed for someone else's acceptance, for even a small moment of at least one other person adoring him.
One day, getting lost in the woods, Silver meets an apprentice of the gods of their world: Corvin, an innocent but powerful angel who's not allowed to interact with humans. Unsurprisingly, he was the salvation the prince needed this whole time. Together they form a strictly secret bond, a divine being and a human, a symbol of beauty and purity and someone who was classified as displeasing. Slowly, they uncover the secrets of the royal family, Silver's inability to feel most of the time and even the gods of Seriliss.