The default costume of Nijisanji's Kenmochi Touya, as seen in post #3547321.
His default costume is a school uniform consisting of a blazer, grey sweater, white shirt, red necktie, black pants, and loafers. He is also featured with a bandaged arm and a shoulder strap that holds his kendo gear. In December 2021, he received a short-sleeved version which removes his blazer and swaps his shirt with a t-shirt and his sweater with a grey sweater vest.
This tag implicates kenmochi_touya (learn more).