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 Episode 26 (Hanyō no Yashahime), her powers have been returned.