Tokugawacho Josui Nishiharu (徳川町 如水 西春店)

Note: This is a sister branch of Ramen Rikimaru (see the Meieki listing) — both are part of the 徳川町如水 (Tokugawacho Josui) ramen group operated by Wildwood Co., Ltd. (ワイルドウッド株式会社), headquartered in Higashi Ward, Nagoya. The group also runs the Josui main shop, Royal, Taiga, a Los Angeles branch, and a curry udon shop. Confirmed via the group’s official site (josuiramen.jp).