The fifth costume of Nijisanji's Nishizono Chigusa, as seen in post #7226527 and post #7226528 (Twitter).
A jirai kei outfit with a blue shirt with long frilled sleeves and shoulder cutouts, a black choker, earrings, and an industrial piercing.
She has blue hair with a lighter blue colored inner hair, black hair bows. Her hair is either long in a two side up, or short.
In contrast to her outfits that were done by Izumi Sai, her jirai kei costume was designed by Misumi.
This tag implicates nishizono_chigusa (learn more).