IXA was a koukaku quinque wielded by Kishou Arima, built as a lance on a gun-sword grip with a spiked base. It pierced ghouls with ease and could shift into a defensive form to block powerful kagune, serving Arima until Ken Kaneki finally destroyed it.
IXA was a koukaku-class quinque belonging to Kishou Arima. It resembled a lance fixed to a gun-sword handle capped by a spiked pommel, and it could drive through a ghoul's body with ease while extending its reach.
Beyond its offensive edge, the weapon shifted into a defensive stance that let Arima turn aside the kagune of numerous powerful ghouls. It first took damage during the Owl Suppression Operation at V14 in a clash with Ken Kaneki. Once mended, Arima carried it again until the Third Cochlea Raid, where Kaneki wrecked it for good during their second underground fight.
Investigators of the Arima Squad carry blades that echo IXA in both look and behavior, able to change from a broad sword into a shield. Whether these are versions of IXA or simply copies has never been made clear.

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IXA is a koukaku-class quinque that belonged to Kishou Arima, shaped like a lance fixed to a gun-sword handle with a spiked pommel.
IXA let Kishou Arima pierce through a ghoul's body with ease at an extended reach, and it could shift into a defensive stance to turn aside powerful kagune attacks.
Kishou Arima was the CCG investigator who wielded IXA.
Ken Kaneki destroyed IXA for good during their second underground fight in the Third Cochlea Raid, after having damaged it once before during the Owl Suppression Operation.
Investigators of the Arima Squad carry blades that resemble IXA in look and function, able to switch from a broad sword into a shield, though it is unclear whether these are true copies of IXA.
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