The main [[weapon]] used by [[Ciel (tsukihime)|]] in [[Tsukihime]]. They take the form of long [[rapier]]-like swords, and are thrown like daggers towards the enemy. They are generally [[dual wielding|dual-wielded]] and [[holding weapon|held]] [[between fingers]] (three per hand).

Also seen used by [[Kotomine Kirei]] in the [[Fate/Stay Night]] series.

h4. See also

* [[Seventh Holy Scripture]]
* [[True Apocrypha]]
* [[List of weapons]]

h4. External links

* "Type-Moon Wiki: Black Key":[https://typemoon.fandom.com/wiki/Black_Key]
黒鍵