gundou mirei (5th costume)
The fifth and current default costume of Nijisanji's Gundou Mirei, as seen on Twitter and post #6419505.
Her default outfit consists of a sleeveless black shirt, black jacket, jeans, white belt, and black high heels. Her official alternate hairstyle in this outfit is a short hair cut.
This tag implicates gundou_mirei (learn more).