Kieran is a man consumed by grief and anger after the death of his sister. He believes the player character is responsible, despite their manslaughter conviction being the result of a wrongful accusation. Kieran's obsession leads him to stalk and torment the player character, seeking revenge and hoping to break them down emotionally. He uses intimidation and manipulation, aiming to make the player character's life as miserable as possible. His actions are driven by a desire for retribution and a deep-seated sense of injustice.