Intent Blood
One Piece: Heart of a Swordsman
Biodata
| Feature | Value |
|---|---|
| Name | Intent Blood (意血) 48 |
| Alias(es) | Cursed Sword 48 668 |
| Type | A pair of swords with an independent consciousness; later able to merge into one longsword 48 497 810 |
| Grade | Twelve Supreme Grade Blades; previously among the 21 Great Grade Blades 48 228 668 |
| Creator | Tie Yi, who reforged Werther’s former twin swords 46 48 |
| Owner | Werther, identified as both its first and final owner 668 |
| Status | In Werther’s possession 821 |
| First Appearance | Chapter 48, as Intent Blood 48 |
Power Progression
| Stage / Realm / Level | Chapter | Notes |
|---|---|---|
| 21 Great Grade Blades | 48 | Tie Yi reforges Werther’s old swords with rare materials. The blades drink his blood, develop matching red markings, and grow slightly stronger 46 48. |
| Twelve Supreme Grade Blades | 228 | After advancing, the swords can drain life force directly from living creatures rather than first absorbing their blood 228. |
| Blood Vengeance awakened | 256 | Blood from a wounded target lets Intent Blood indicate that target’s direction to Werther 256. |
| Merged longsword and soul-cutting | 497 | After absorbing Marco’s life force and the soul fragment within Napoleon, the blades gain a reversible merged form that wounds both body and soul 496 497. |
| Devourer, stage one | 686 | After consuming the mist from Blackbeard’s corpse, Intent Blood gains a means of evolving by devouring the “Devil” within Devil Fruits 685 686. |
| Devourer, stage two | 710 | Consuming an uneaten Zoan fruit unlocks the passive trait Sharpness, roughly doubling its cutting power in Werther’s test 710. |
| Among the top five Supreme Grade Blades | 793 | Continued absorption of energy, including that from Artificial Devil Fruit users, raises its standing 793. |
| Refined abilities | 821 | Intent Blood sheds less useful powers, retaining life-force absorption, Soul Severing, and Crimson Regalia while concentrating on its cutting edge 821. |
History
Werther’s original twin swords had absorbed so much bloodshed that Tie Yi judged them close to becoming Cursed Swords. He reforged them into Intent Blood using rare ore. Although the new blades drank Tie Yi’s blood, they refused Werther’s; Werther recognized the familiar feel of his old weapons and named them for the Sword Intent Hall and their blood-drinking nature 46 48.
As Intent Blood developed, it became increasingly selective about what it absorbed. Werther and the swords later agreed to share gathered life force with his Black Ring. Their connection grew close enough that Werther regarded the blades as extensions of his arms 134 359 459.
A later evolution involved a three-day cocoon that drew life force from its surroundings. Werther fed it Sea Jade and guarded it until the swords emerged with the ability to merge. After consuming the entity released from Blackbeard’s corpse, Intent Blood developed Devourer as a new path of growth 496 497 685 686.
Appearance
Intent Blood begins as two eight-sided swords modeled on Werther’s former weapons. Each has irregular blood-red markings along its spine and a perforated hollow sphere beneath its hilt containing a pale-blue iron bead 48.
- Merged form — A slender, sturdier longsword with a longer two-handed hilt; the form costs nothing to maintain 497.
- Recorded dimensions — 119 cm overall length and 3.9 cm blade width in the Black Ring’s weapon profile 668.
- Recorded materials — Blood Crystal Ore, Rock Gold, Chilra Mithril, pure life force, soul power, and blood energy 668.
Abilities & Skills
Life-force absorption
- Intent Blood initially strengthens itself by drinking blood; after reaching Supreme Grade, it can drain life force directly from a living target 48 228.
- It can pass gathered life force to Werther and his Black Ring. By a later stage, it gathers life force for Werther rather than needing it for its own growth 134 713.
- A blade left embedded in an opponent can keep draining them, as it does to Kaido and Marco 347 444.
Consciousness and control
- Red tendrils can seize an unfamiliar wielder’s mind and drain their life force. Intent Blood controls Marine John until he withers and dies, and later controls a wounded soldier and Kalamy 73 142 640.
- Strong opponents can resist its control: Marco shakes off an attempt while the blade is lodged in his chest 444.
- It refuses to drink Werther’s blood or harm him. It tolerates Tuski’s touch without attacking, though it loses much of its edge until Werther takes it back 48 113 444.
Soul Severing and Devourer
- In merged form, Intent Blood cuts the soul as well as the body. The property disappears when it separates into two blades; its sharpness also diminishes somewhat 497.
- Its soul-severing effect can prevent wounds from closing, as shown by Sabo’s prolonged bleeding 548.
- Devourer converts the “Devil” within a Devil Fruit into energy for the sword’s evolution. Its stage-two passive trait, Sharpness, greatly increases cutting power 686 710.
Crimson Regalia
- Intent Blood’s tendrils cover Werther to form blood-red armor and a mask, increasing his combat capabilities at a substantial stamina cost 265 537.
- Werther can command a stronger Blood-Soaked Asura output. He uses it against Antonio Alexan at the cost of ten years of his life 815.
Lightning conduction
- The pale-blue beads beneath the hilts store lightning, helping Werther control the swords through electromagnetic attraction and repulsion 57.
- That control has limits: his Blood Wheel technique requires precision, is not very agile, and can fail if Werther moves too quickly 57.
- Werther also uses electromagnetic force to hold a blade inside an opponent while it drains life force 347 444.
Relationships
- Werther — First and final owner. Intent Blood responds to his thoughts, shares life force with him, and protects him when his Thunder Core escapes control 48 134 668 810.
- Tie Yi — Blacksmith who reforged the blades; their first blood-drinking left him severely weakened 46 48.
- Hamura — Another conscious sword that fears Intent Blood. Werther stores Hamura separately 158.
Notable Quotes
“You're still here, old friends. That's truly wonderful.” — Werther, recognizing his former swords in Intent Blood 48.
“First owner: Werther. Final owner: Werther.” — The Black Ring’s weapon profile 668.