Marugame Seimen is an udon shop on the basement first floor of Osaka Ekimae Dai 4 Building in Umeda, Kita Ward, Osaka. It serves kamatama udon, eaten mixed with a raw egg, and zaru udon, with inari and fried items on the side, and free wakame, green onion, and tempura flakes are added. Staff pour the broth, and other seasonings are added after payment. It gets crowded enough on Saturday evenings for a line to form.