The default outfit of Nijisanji EN's Alban Knox, as seen in post #5440428 and post #5440429.
His default outfit comprises a black and orange coat, black hoodie, black and white shirt, black pants, black combat boots, round orange-tinted glasses, cat ear-shaped "illusion makers" on his hair, black and orange gloves, single fish-shaped earring on his left ear, bulletproof vest, grey belt, black cable tail (suggestive of a cat tail) with two metal prongs at the end like an electric plug, and a grey and black leg belt harnessed around his right leg.
This tag implicates alban_knox (learn more).