Biodata
| Feature | Details |
|---|---|
| Name | Chikura Blade (千仓刃) |
| Alias(es) | Chikura |
| Type | Chakra-storing short sword |
| Owner | Uchiha Rin |
| Reported Origin | Allegedly left at a Konoha ninja tool shop by an injured elite ninja from the Cloud Village after the Third Shinobi World War. |
| Status | In Uchiha Rin's possession |
| First Appearance | Chapter 2 |
Background / History
Chikura was discovered among discarded, dust-covered weapons in a Konoha ninja tool shop. Though its plain sheath made it appear ordinary, it reacted warmly when Rin took its hilt and sent chakra into it; the restless dark chakra in his body also became noticeably calmer. Rin spent all 500 ryo he had saved to purchase it, receiving basic ninja tools from the shop owner as a bonus 2.
Rin tested the blade that night and confirmed that it could absorb, store, and later interact with chakra. He also found that its unusual vein-like patterns did not resemble the sealing formulas taught at the Ninja Academy 3.
During Kakashi Hatake's bell test, the unloaded blade cleanly cut through Kakashi's standard kunai, drawing Kakashi's serious attention. Rin later used Chikura to sever the cords holding both bells, allowing Team 7 to pass through coordinated action 4.
Kakashi subsequently identified the weapon as Chikura and warned Rin that Konoha was not as peaceful as it appeared. He instructed Rin to protect the sword, stating that he would need it one day 5.
Appearance
Chikura is an unadorned short sword whose humble exterior conceals its unusual chakra-based properties.
- Plain, dark iron-gray sheath with a worn black clasp.
- Approximately one foot long; thin, resilient, and exceptionally sharp.
- Pale-blue, nearly translucent gleam along the blade when drawn.
- Dense, vein-like patterns extending from the hilt to the tip along the blade's spine.
- The patterns illuminate in pale blue as they absorb or process chakra 2 3.
Abilities & Skills
Chakra Storage
Chikura can absorb chakra supplied through its hilt and retain it within the patterned blade.
- Its absorption is gentle rather than forceful, drawing chakra through the blade's internal patterns 3.
- Rin estimated its full capacity at roughly the amount of chakra he could naturally recover in one day 3.
- Once saturated, it will not accept additional chakra until its stored energy has been processed or expended 3.
- Rin regularly infuses it with chakra at night, and the process became smoother as the blade adapted to him 5 6.
Physical Sharpness
When not covered in chakra, Chikura possesses cutting power far beyond standard ninja tools.
- It cut nearly an inch into a weathered wooden stake with a smooth, splinter-free cross-section 3.
- It cleanly severed Kakashi's standard kunai without damaging its own edge 4.
- Rin used it to cut the cords securing Kakashi's two bells during Team 7's survival test 4.
Chakra-Coated State
When filled with chakra, Chikura creates an invisible layer around its blade.
- In this state, it loses its ordinary physical cutting ability; a strike against wood left no visible mark 3.
- The chakra coating appears to be intended for an effect beyond simple cutting enhancement, though Rin had not yet uncovered its release method 3.
Purification and Feedback Cycle
After sustained nightly infusions, Chikura began returning refined chakra to Rin in periodic cycles.
- Its first documented feedback occurred after seven days of infusion, lasting approximately ten minutes 6.
- The returned chakra eased Rin's muscle soreness and meridian strain, strengthened his body, and slightly increased his chakra capacity 6.
- The feedback also suppressed the cold, restless force in Rin's lower abdomen and temporarily eliminated its usual pain 6.
- By the beginning of Team 7's Land of Waves mission, Chikura had completed two cycles, contributing to an increase of nearly twenty percent in Rin's chakra reserves since graduation 7.
Chakra Resonance and Warning
Chikura responds to Rin's unusual yin chakra and dangerous chakra signatures nearby.
- From their first contact, its warmth calmed the dark chakra within Rin's meridians 2 3.
- While approaching the Land of Waves through dense fog, the blade abruptly became hot and its patterns faintly lit beneath the sheath as hostile ninja killing intent targeted Team 7's boat 7.
Relationships
- Uchiha Rin — Current owner and chakra source. Chikura has gradually adapted to Rin's chakra and returns purified energy to strengthen him 2 5 6.
- Kakashi Hatake — Recognized the blade's significance after witnessing it cut through a kunai; he later revealed its name and cautioned Rin to keep it safe 4 5.
- Unnamed Cloud Village ninja — Reported previous owner who left the sword at the ninja tool shop while injured after the Third Shinobi World War 2.
Notable Quotes
“Keep your sword safe. You'll need it someday.” — Kakashi Hatake 5