Marugame Seimen JR Yurakucho Station sits under the elevated tracks at Yurakucho Station and serves sanuki udon made in-house. The kamaage udon and mentaiko kamatama udon come with chewy noodles, tempura, scallions, and tempura scraps. You order udon first, then pick tempura or onigiri yourself and pay, and return your dishes to the self-service area when you finish. At lunchtime the shop fills with office workers, and orders and payments can run slow.