pomu rainpuff (3rd costume)
The 3rd costume of Nijisanji EN's Pomu Rainpuff, as seen in Danbooru post #6135782. Contrary to popular belief, and #PomuGear being the costume reveal hashtag, and the Metal Gear Solid 2-inspired aesthetic of the costume reveal stream, the costume itself is not based on the Metal Gear franchise.
Tactically-themed, it consists of a black crop top and black shorts with a thigh pouch strapped to her left thigh, black knee boots, black jacket, black belt, and a black beret. She also has a knife as her weapon, while her hair is colored grey and tied as a ponytail to her left.
See also
This tag implicates pomu_rainpuff (learn more).