The character known as Hime is the second princess of the royal family that rules over all monsters. While her true name is Lilianne or Lillianne, she has a strong distaste for being addressed by it and insists on being called Hime, which is the Japanese word for princess. She presents herself as a young aristocratic woman of seventeen years, with long golden-blonde hair and striking scarlet eyes that hint at her inhuman nature. Her typical appearance includes a tiara and Gothic-style clothing, matching her royal status and otherworldly origins. As a descendant of a phoenix, her true race is that of a mythical fire bird, a fact that underlies her most significant powers.

Hime’s personality is a complex blend of aristocratic detachment and a surprisingly playful demeanor. She is not characterized by arrogance so much as by a practical and often amused view of the violent world she inhabits, showing no flinch at even the most gruesome forms of combat. Her noble upbringing is evident in how she naturally leaves hard labor and mundane tasks to her servants without a second thought. However, this cold exterior masks a fierce loyalty to those she considers part of her household. She has demonstrated a willingness to break ancient rules and risk her own safety to save her servants, revealing a deep-seated sense of responsibility for their well-being.

Her motivations are largely defined by a rejection of her family's bloody traditions. While her many siblings are engaged in a brutal and lethal contest for the throne of the monster kingdom, Hime shows absolutely no interest in the crown. Instead, her primary goal is simply to survive the endless stream of assassins sent by her rivals while protecting the small group of retainers she has gathered. This protective instinct is fueled by a past tragedy in which a zombie attack orchestrated by one of her brothers wiped out all of her previous servants, a loss she is determined to never experience again.

In the story, Hime serves as the central figure around which the action revolves. While she is physically only as strong as an ordinary human, her value lies in her royal blood and the unique abilities it grants her. She possesses the Flame of Life, a power that allows her to resurrect the recently deceased. When she brings someone back, they become her Blood Warrior, a half-immortal servant who can heal almost any wound in seconds but must periodically drink her blood to maintain their existence. It is in this capacity that she meets Hiro Hiyorimi, a boy who dies saving her life. Finding him interesting, she resurrects him on a whim to be her new servant, binding his life to hers. Throughout the series, she leads her unconventional household—which includes Hiro, the powerful android Flandre, the werewolf Riza, and the vampire Reiri—in battles against a wide variety of monsters, from werewolves and vampires to mermen and invisible assassins.

Her key relationships evolve significantly over time. Her bond with Hiro is the most central, beginning as a purely transactional master-servant dynamic but gradually deepening into mutual reliance and hinted romantic tension, especially in the manga. She forms a grudging alliance with Riza Wildman, a half-werewolf who initially seeks revenge against her but later becomes a loyal, if hot-headed, companion. Similarly, she establishes a working relationship with the vampire Reiri Kamura, based on respect and mutual need rather than friendship. Her younger sister, Sherwood, is one of the few siblings she interacts with peacefully, acting as a protector and mentor to her even while refusing an official alliance in the succession war.

Hime’s development throughout the series is subtle but present. She begins as a largely passive target, simply reacting to whoever is trying to kill her. Over time, and likely influenced by the loss of her previous servants and the loyalty of her new ones, she becomes a more proactive guardian, prioritizing the safety of her followers over the easy path of royal detachment. This change is symbolic in moments where she casts aside her royal tiara, an act representing her rejection of the throne's legacy in favor of personal bonds.

Regarding her notable abilities, Hime is not a powerhouse of raw strength but a master of adaptability. Her most famous skill is her expertise with a vast and eclectic arsenal of weapons. While she favors a chainsaw, she can wield anything from a fencing rapier and a defibrillator to a hammer, a circular saw, a flail, a pitchfork, and various types of swords with deadly efficiency. She is a highly strategic and pragmatic fighter, perfectly willing to destroy a house or set a fire to corner an invisible opponent. Her core supernatural power is the Flame of Life, which is exclusive to her role as a phoenix princess. This flame allows her to resurrect the dead and grant them half-immortality as her servants. In a desperate situation depicted in the manga, she even temporarily transforms into a half-vampire to save Hiro, demonstrating the lengths to which she will go to preserve her servants' lives.