What title did taira no masakado claim for himself?

Taira no Masakado claimed the title of "Shinno," which translates to "New Emperor." This title reflected his ambitions to establish himself as a ruler independent of the central government in Kyoto, especially during a time of political instability in Japan. His rebellion against the imperial authority in the early 10th century ultimately led to his deification as a folk hero and a protector deity in later Japanese culture.