Katsuya Akihabara Store is a single-diner restaurant in Akihabara that serves katsudon, rosu katsu set meals, and chicken katsu. Tonkatsu sauce is poured as desired from a pot placed at each seat. All seats are single seats arranged in a U shape, and orders are placed at a kiosk that supports Korean, using cash or card. The kitchen has accumulated grime and foreign matter on the cups.