Loving Muteness (слэш)

Inspired by the fic "Little Black Hearts" (raoremrao). Adult Harry returns to Hogwarts to teach as a Potion Master. He finds out that this position is free as Severus decided to quit teaching. Disability made him more sensitive and understanding. Being mute, Severus still lives in Hogwarts and fills his days with healing: himself or wounded animals he finds when walking in the forest. Severus asks Harry for forgiveness and Harry willingly does forgive. They become friends and eventually lovers. Harry enjoys visiting Severus whenever he can, heal animals and communicate. He also very badly wants to kiss Severus and to become intimate with him.