"THE DARK COVENANT"
Kekkai…
The original Konkyuu, the technique invented by Owari Kurogane himself. Constructing a barrier with the user's technique, with the sole purpose of trapping a target within its selected range, Yukina set the conditions to trap only her and the creature within it, leaving all others away from harm.
‘The Banshee,’ Yukina began analyzing. ‘The mythical spirit of death. If its technique has anything to do with its folklore stories, I would be in serious trouble. By the looks of it, it needs an activation process as it probably doesn’t have a mind of its own.’
A victor’s smile blessed the face of Yukina, forging a different handsign as she chanted:
"神核術・全開"
(Shinkaku-jutsu: Zenkai)
After a speculation based off of a gamble, Yukina saw to it to end the mythical being before all else, especially the activation of its technique.