Muretachi no Tsubame

The is a special technique used by Setsuna since her girlhood. The hint to tap into its Water-based abilities was to "Cut the Water."

By slashing the air, Setsuna can unleash a barrage of green yōki in the form of swallows towards her opponent. In episode 10, the attack is temporary enhanced from the twin conjoined yōkai Kinka flame after Kanemitsu no Tomoe absorbing its fire to successfully defeat and end Lady Joka.

It is last seen in the Season 1 finale against Kirinmaru, who blocks it with ease, resulting its destruction and the sudden premature demise of its user.

In "Spirit Demon of the Sea", this water-based attack/technique has been fully restored to Setsuna's highly evolved and considerably more advanced naginata, but is now much stronger and more effective than initially; capable of striking at a longer distance and from different directions all at once rather than just one straight line alone at close range.