Heavenly Sword

The Heavenly Sword is one of the three divine artifacts preserved in Abe no Seimei's shrine. Also identified by the mythic name Ame no Murakumo no Tsurugi, it lends extraordinary cutting power and can be assimilated into its chosen user's body. Theodore Miller combines it with magic, martial techniques, and other artifacts before spending its remains in the battle against Wrath.

History

Seimei's inheritance

Seimei directs Theodore to Japan for the Heavenly Sword, the Eight Mirrors, and the Eight Jade Magatamas, describing the sword as capable of cutting even clouds. After Theodore passes the shrine's Heaven, Earth, and Person test, all three artifacts awaken, choose him, and enter his body. Their assimilation is immediate and without rejection, but later battles show that possessing the sword does not eliminate the physical and magical cost of using it. (Chapters 358 and 360–361)

Theodore first borrows its blade through two fingers to defeat Magoshiro's aura sword and sever his arm. On Oe Mountain, he combines the god-sword with Soul Calibre as the Beheading Heavenly Sword, producing a long-range cut that kills corrupted creatures by severing their souls as well as their bodies. Shuten-doji recognizes Theodore as the sword's owner after experiencing its power and agrees to hear his proposal. (Chapters 361–362)

Eastern campaign

During the offensive against Lust's forces, Theodore fuses the Heavenly Sword with Abraxas. The resulting Unprecedented God-Sword cuts through Cheonju Castle and annihilates its defenders, but the exertion leaves him unable to repeat the attack immediately. He later combines the sword with Hellfire, Soul Calibre, and Lee Yoonsung's martial techniques against the heavenly demon. These applications depend on Theodore's own Sorcery, magic power, and learned techniques rather than being automatic functions of the artifact. (Chapters 363–364 and 373–375)

Grand Cross defeats the heavenly demon but chips the sword's tip, even though the Eight Jade Magatamas absorb more than half the burden. Theodore retains the damaged weapon because his foresight says it will be needed against Wrath. He apologizes that it cannot be returned to Seimei's shrine alongside the Eight Mirrors. (Chapters 376–379)

Final use against Wrath

In space, Theodore again fuses Abraxas with the Heavenly Sword to pierce Wrath's outer shell, then uses the physical blade against deicide-built killer bots. Repeated contact with those machines accumulates damage until the blade breaks in half. Theodore continues with the remnant and finally invokes its origin: the sword taken from the eight-headed serpent. The remaining artifact turns to dust as the medium that summons Yamata no Orochi against Wrath. (Chapter 390)

Abilities and limitations

• Divine cutting power: The sword's projected edge defeats aura blades, cuts powerful magic, and cleaves targets at great distance. Wrath's purpose-built deicide weapons can weaken and break it through repeated contact. (Chapters 361–362 and 390)
• Bodily assimilation: Like Seimei's other two artifacts, it can enter its accepted owner and be called through his limbs rather than carried continuously as a visible sword. Acceptance does not make an untested candidate the owner; Theodore first passes the shrine's moral trial. (Chapters 360–361)
• Fusion medium: Theodore combines it with Abraxas, Hellfire, Soul Calibre, and martial arts. The results inherit strengths from both sides of each fusion and can impose extreme fatigue or damage the artifact. (Chapters 361, 364, and 373–376)
• Summoning connection: Its origin in Yamata no Orochi provides the link Theodore uses to summon the serpent. Doing so consumes the already broken sword completely. (Chapter 390)
• Finite durability: Grand Cross chips the weapon, and killer bots engineered to destroy divine beings break it. Its divine status therefore does not mean it is indestructible. (Chapters 376–377 and 390)

Ownership and custody