axia krone (1st costume)
The default costume of Nijisanji's Axia Krone, as seen in Danbooru post #4657201.
His default costume was a pilot suit fitting of his lore as a mecha pilot and it consisted of a black shirt with an animal print and a center opening, black pants, black half-coat half-cape worn partially off-shoulder with an attached black scarf with the word "THRONES" printed on it, black belt, single thigh strap on his left leg, and black shoes.
This tag implicates axia_krone (learn more).