Shana
Kirou Ryuuzaki, third seat of of the squad 2, and one of the few shinigami whose rocky relationship with their zanpakuto lead to them finding another way to grow in power. Which lead to him learning how to fuse kidou into this mastery of hakuda, leading to the birth of Shunko, a relatively unique ability, made even more unique by his own elemental attunement. Either way here he was in Hueco Mundo, as a member of the assault squad whose entire job was to distract as many arrancar and vizards as he could in Las Noches while the big boys duke it out elsewhere.
Utilizing his rather unique ability to remain hidden and completely suppress his reiatsu he made his way deep into the very heart of the Arrancar's stronghold, Las Noches. Climbing up onto the roof of one of the many buildings that made up their palace and stopped hiding his presence sending up a signal flare, drawing the Ninjato from it's sheath across his back he would call out it's release phrase "Melt into shadows, Nobu" The ninjato's form would be coated in shadow before shrinking down into a diamond shaped blade of a dagger with a ring for a pommel the shadows around him seemed to darken in his very presence. No point holding back this close to the archenemies of the shinigami.
Utilizing his rather unique ability to remain hidden and completely suppress his reiatsu he made his way deep into the very heart of the Arrancar's stronghold, Las Noches. Climbing up onto the roof of one of the many buildings that made up their palace and stopped hiding his presence sending up a signal flare, drawing the Ninjato from it's sheath across his back he would call out it's release phrase "Melt into shadows, Nobu" The ninjato's form would be coated in shadow before shrinking down into a diamond shaped blade of a dagger with a ring for a pommel the shadows around him seemed to darken in his very presence. No point holding back this close to the archenemies of the shinigami.