Magic
Anti Magic: Heero uses this unique energy to nullify magic. He has learned to channel the energy throughout his body and attain a form where Anti Magic courses through him and covers part of his body. This form is drawn to strong magic and grants him the ability to fly. To activate the form Heero must stand still and concentrate on circulating the energy, which leaves him open to attack. Additionally, the physical exhaustion of using the form limits Heero's usage to only once each day, although he can push for a second.
Bull Thrust 「雄牛の刺突ブル•トラスト Buru Torasuto」: After being flung through the air, the user points both the Demon-Slayer Sword and Demon-Dweller Sword in front of themselves. Any spells or magic lifeforms that are in front the user are dispelled after coming in contact with the swords. The user is also incapable of changing direction without the help of a Spatial Magic user. The user could also use just one of the swords while channeling Anti Magic, referred to as One-Horn Bull Thrust 「片角ワンホーンブル•トラスト Wanhōn Buru Torasuto」.
Black Hurricane 「ブラックハリケーン Burakku Harikēn」: After Anti Magic flows from the Demon-Slayer Sword and enters the user's body, it surrounds part of their body with some black matter, and the user spins rapidly and releases numerous flying slashes, which dispel any magic they contact. This spell is capable of nullifying an entire field of magic and magical traps in an instant.
Abilities
Expert Hand-to-Hand Combatant: Physically, Heero's body is in top form. Heero has been trained in martial arts since he was a small child, both professionally and by his father. He has repeatedly shown great agility and coordination in his attacks. In addition to having powerful kicks and punches, Heero is proficient in counterattacks, takedowns, and body locks. He has repeatedly caught an opponent's weapon strikes with a single hand.
Enhanced Strength: Heero possesses an above-average physical strength, able to do a thousand single-handed handstand push-ups, to swing his sword single-handedly, and to punch holes in rock walls with no injury to himself. Heero can swing his swords with inhuman force, able to damage powerful magic-wielding opponents.
Enhanced Speed & Reflexes: Even without using magic to boost himself, Heero is a very fast and agile fighter. Heero possesses great reflexes, dodging a strike with no wasted effort and immediately counterattacking. He can strike quickly, without warning, and in rapid succession. His speed allows him to follow the movements of faster opponents to better analyze their movements, and block otherwise fatal strikes.
Enhanced Durability: While not having magic of his own, Heero is a highly resilient young man, safely breaking free from a binding spell (albeit a low-level one) and withstanding an assault from relatively strong spells.
Equipment
Grimoire: Heero wields a five-leaf clover grimoire. The grimoire is tattered and covered in dirt, a black five-leaf clover insignia at the center of its front cover. This clover symbol is largely unseen due to the dirt covering it, making most (including Heero) assume that the grimoire possesses unusual magic but is otherwise ordinary. Heero is able to summon a sword from it, which he uses for his Anti Magic.
Demon-Slayer Sword 「断魔の剣 Danma no Tsurugi」: The sword is summoned out of an opened grimoire, inside which it is stored in the form of writing. The user can easily summon the sword at will without consuming any magical power. The is relatively small, about the size of Heero's arm, and resembles a trench knife more than a sword. It has an enclosed handle, with a portion acting like a hand guard. The sword is capable of cutting magic with its edges and deflecting them with it's flat. However, when it is used to cut anything else, it would be reduced to a blunt sword that uses blunt trauma to cause damage to the opponent. Although, the tip of the sword is still sharp enough to create a cut wound. The sword can remove mental enchantment by tapping the person's head with the crossguard.
Demon-Dweller Sword 「宿魔の剣 Shukuma no Tsurugi」: The sword is summoned out of an opened grimoire, inside which it is stored in the form of writing. The user can easily summon the sword at will without consuming any magical power. The sword takes the shape of a giant khyber knife, with the grip at the base of the blade and a handle extending back from this about roughly the width and length of Heero's forearm. There is a thin, hollowed-out portion running along the back edge of the blade from the base to the middle of the blade. The sword is capable of cutting magic with its edges and absorbing other people's magical power. However, when it is used to cut anything else, it is reduced to a blunt sword that uses blunt trauma to inflict damage on the opponent. The sword's original ability is to absorb spells and then to release that magic in a flying slash. After the sword has absorbed a certain amount of magical power, the hollowed-out portion of the blade starts glowing. At that moment, when the user swings the sword, it unleashes magic with similar elemental properties as the absorbed mage's elemental affinity. It has been noted that the sword passively absorbs any magic in the vicinity, including the user's, and is immensely heavy. These two factors make it a weapon that only those with no magic power or overwhelming magic power could hope to wield effectively.
