Nen research file · Guardian beast
Magical Worm (Fugetsu's beast)
Mechanics diagram
Activation
- Fugetsu opens a conjured door; a twin door opens at the destination.
Conditions
- Fugetsu must have physically visited the destination beforehand.
- Baseline limit of one use per day (ch 402 recap); the 'unlimited' state is suspected enemy interference.
- The Outgoing Door closes when Fugetsu enters the tunnel; the Door of Return when her companion does — others may pass while a door stands open.
- Wishing for a location outside the ship produces no door.
Effects
- Point-to-point travel between decks and sealed sections.
- Return door now appears even when she travels alone (post-'breakthrough', ch 400).
Assessment
Description
Conjures paired doors — an Outgoing Door and a Door of Return — linking two locations, the only unrestricted movement aboard the sealed ship. Originally once per day; Fugetsu's late-voyage belief that she can use it freely traces to an enemy mark on her shoulder, and each use visibly drains her.
Observed output
Effects
- Point-to-point travel between decks and sealed sections.
- Return door now appears even when she travels alone (post-'breakthrough', ch 400).
Counter-analysis
Weaknesses & counters
Weaknesses
- The space between doors is not guaranteed safe — see Kacho's death.
- Overuse is wasting her: evil spirits gather on her Zetsu-weak aura (ch 400–402).
Sourcing
Evidence
File data
Parameters
Bindings
Conditions
- Fugetsu must have physically visited the destination beforehand.
- Baseline limit of one use per day (ch 402 recap); the 'unlimited' state is suspected enemy interference.
- The Outgoing Door closes when Fugetsu enters the tunnel; the Door of Return when her companion does — others may pass while a door stands open.
- Wishing for a location outside the ship produces no door.
Exposure register
Who knows it exists
Open questions
Related mysteries