Asaka

is a shinobi from the Land of Haze.

Abilities
Asaka and his quadruplet brothers make use of the Transformation Technique to transform into women to deceive men. When not disguised, Asaka coats his weapons with poison that can kill in an instant.

He also carries a tantō, hinting at ability in kenjutsu.

Kara Actuation Arc
Asaka and his brothers were given a mission to retrieve the cells of the First Hokage Hashirama Senju, which made its way into the black market in the Land of Silence. Using their female disguises, Asaka and his brothers attempted to seduce Kirisaki to learn of the location of the cell. However, he lost interest when Boruto Uzumaki arrived himself taking the appearance of a woman.

Witnessing Boruto and his comrades taking away an unconscious Kirisaki, Asaka and his brothers tracked them to learn that Sakuya had the cell in her possession. Yoruga gave Asaka his earring, with the intention of sacrificing his life in order for their mission to be a success. Asaka, Hiruga and Yūga successfully sneaked into the castle thanks to Yoruga’s sacrifice to bypass the barrier ninjutsu surrounding the castle. Asaka and Yūga managed to locate and kill Sakuya and claim the cell. Boruto arrived and using the opportunity for a getaway, they framed him for the deaths of Sakuya and her butler, but not before the latter alerted the castle guards of her death and alleged culprits. Having successfully escaped the village, Asaka and his remaining brothers mourned Yoruga.

While making their way back to their country, Asaka learned they were being followed, and in order for their mission to be a success, Yūga stayed behind to stall their pursuers. Yūga passed on his earring to Asaka before they part ways.