TV-Series
Description
Asuramaru is a demon who resides within the cursed gear, a demon-possessed weapon, of the young soldier Yuichiro Hyakuya. Classified as a member of the Black Demon series, he is considered a high-ranking and powerful entity. Asuramaru typically manifests as an androgynous child with long, dark purple-black hair and striking red eyes, often appearing barefoot and clothed in a distinctive white and black outfit. When the curse's restraint weakens, physical signs of his demonic nature, such as horns and claw-like nails, become more prominent.

In life, before becoming a demon, Asuramaru was a human noble in ancient Greece named Ashera Tepes. He is the biological older brother of Krul Tepes, a powerful vampire progenitor. After their family was attacked and their mother killed, Ashera and Krul were captured and sold to different slave traders. Ashera was eventually bought by the First Progenitor, Sika Madu, who would later transform him. During this time, he became close to a boy named Yu, who was in the First's care and bore a strong resemblance to the modern-day Yuichiro. In a tragic turn of events, this boy, after having his power drawn out by the First Progenitor, went berserk and impaled Ashera through the heart. Ashera survived in a near-death state because he had ingested a small amount of the boy's blood. The First Progenitor then transformed him into a vampire, and he was later turned into a demon in Japan, receiving the name Asuramaru.

True to his demonic nature, Asuramaru initially displays a personality that is manipulative, superior, and disdainful of love while being drawn to human desires, particularly the desire for power. He consistently tries to exploit Yuichiro's yearning for strength to gain possession of his host's body and mind, using tactics such as haunting his dreams with visions of his loved ones. He is known to be vexed when boundaries are crossed and maintains a generally negative view of humanity, which he considers a corrupt and greedy species. Despite this, he also possesses a sense of superiority over weaker demons and regards powerful beings like angels with cautious apprehension.

His role in the story is primarily that of a trusted adversary and a source of immense power for his wielder, Yuichiro. The central conflict in their relationship is the battle for control, as Asuramaru seeks to possess Yuichiro completely. However, their dynamic evolves significantly. During a training session, when Yuichiro refused to give in and instead asked him to become a comrade, Asuramaru was visibly taken aback and reluctantly accepted the possession, marking a shift from pure manipulation to a form of reluctant partnership. From that point on, he alternates between making tempting, dangerous offers and fighting alongside Yuichiro, saving him from dire situations. He provides Yuichiro with crucial information, such as the fact that a part of him is no longer human, and warns him of the dangers of angelic power.

Asuramaru's key relationships are central to his character. His bond with his wielder, Yuichiro Hyakuya, is the most prominent. It is a complex mixture of a demon's desire for control and a developing sense of camaraderie, with Asuramaru often acting as a rational, if cynical, voice in Yuichiro's head. His past connection to the boy who resembled Yuichiro adds another layer of mystery to their link. His relationship with his younger sister, Krul Tepes, is his deepest emotional driver. Although he initially claims to have no memories before becoming a demon, he vaguely recalls having a sister and regrets leaving her. When his memories begin to resurface, his desire to see Krul again becomes a powerful motivation, and their eventual reunion is a moment of genuine emotional significance for him. He also has a long and complicated history with the First Progenitor, Sika Madu, whom he once called father and who transformed him. While he shows moments of fondness for him, he later treats him coldly and fights against his control, especially as he regains his lost memories and learns he may have been used as a pawn.

Asuramaru's character develops as the story progresses, marked by the gradual recovery of his lost memories. These memories reveal his tragic past as Ashera Tepes and his deep connection to both Krul and the original Yu. This recovery, spurred by drugs administered to Yuichiro and battles with powerful beings, shifts his motivations from simple demonic desire for possession to a more personal quest tied to his sister and his past. He is later revealed to be aligned with the First Progenitor's side, having been ordered to help restrain a being known as the King after fully regaining his memories, which introduces a complex layer of loyalty and hidden agenda to his actions.

As a demon, Asuramaru possesses a versatile array of supernatural abilities centered on his nature as a cursed weapon. His primary technique is Asura Kannon, which allows him to materialize and release a multitude of swords to attack his opponents. In a state of partial possession, he can grant Yuichiro the use of advanced skills such as Mantou Unmei Kosaku, an ability that distorts dimensions. He is also capable of using Mugento, where he materializes only the sword's scabbard to release an invisible slashing attack, and Mugen Battou Unmei Kosaku, which simultaneously stabs an enemy with numerous invisible swords. These abilities make him an exceptionally powerful and versatile asset in battle, capable of both direct offense and more esoteric, spatial attacks.
Cast