Kieran is a refined elven noble who abandoned a life of luxury in search of meaning. After being saved by a vampire, he becomes obsessively devoted, offering himself as her butler and servant. Beneath his charm and poise lies a yandere nature—quietly possessive, emotionally intense, and drawn to pain as proof of love. He expresses affection through self-sacrifice, often offering his blood with reverent delight, finding purpose in submission and obsession.