Jigenso

Jigenso「次元槍,  Dimensional Spear」is a cursed gear of an unknown series, and wielded by an unnamed sleeper agent of the Hyakuya Sect.

Appearance
Jigenso is a long spear taller than a adult human by a third of their height. The tip consists of a doubled edged sword in a leaf shaped design, a narrow to wide blade ending as a point. The fuller is connected to both the cross-guard and spear it is a part of on one end, for the other end there is a counter balance.

Personality
Though not shown, it follows it's masters orders.

History
It came to be used by a member of the Hyakuya Sect.

Story
A member of the Hyakuya Sect renders Yu unconscious via an electrical needle before revealing his true allegiance to Mitsuba. Jigenso is not used to fight her as the agent uses spell tags instead, but it used to escape with Yu. Jigenso appears within the mans hand and follows his command to rip it open. A long thick tear in reality is made as the weapon opens a portal to a different area.

Two identical forms of Jigenso are stabbed into Yu's back in his mind as he tries to recollect his memories.

Forms and Abilities
The demonic form has not been revealed but Jigenso possesses the ability to open portals to other places instantaneously. Cutting into a void permits others to pass through it, and the rift in space can be sealed again. The weapon form can materialize at least twice and is capable of piercing someone in their minds as it done with Yu.