This article examines the prominent Japanese postwar thinker Maruyama Masao's critical engagement with his contemporary German legal theorist Carl Schmitt. Maruyama engaged with Schmitt's decisionistic notion of "the political" and sovereignty since he found it useful in addressing the pathological elements of Japanese political culture, namely, the widespread political passivity and fatalistic ethos of the Japanese public. In his view, such a "decision-avoiding" political culture, which had contributed to the rise of fascism in interwar and wartime Japan, posed a fundamental threat to the viability of Japan's postwar democracy. Although Maruyama objected to Schmitt's authoritarian theory of political leadership, he nevertheless believed Schmitt provided important insights into the key concepts of modern politics, such as political agency and the constituent power of the people. In his efforts to foster political subjectivity and liberal individuality in postwar Japan, Maruyama attempted to strike a balance between two extremes: Schmittian normless decisionism, on the one hand, and a politically naïve liberal constitutionalism, on the other. I conclude by suggesting that the hitherto overlooked intellectual affinity between Maruyama and one of the leading Weimar-era constitutional theorists-Hermann Heller-can enrich our understanding of Maruyama's unceasing effort to formulate and insist on the imperative role of political subjectivity and liberal individuality in consolidating liberal democracy in postwar Japan.