Mendokoro Tsurutsuruan Dai 2 Biru-ten is an udon restaurant in the basement of Osaka Station Front Building No. 2. It serves kakiage udon and kitsune udon, and you can add udon or soba to a set meal. Around 3 p.m., there was no wait, and the food arrived quickly after ordering. The restaurant is crowded at lunchtime, making it difficult to eat slowly.