The Inagawa-kai is the third-largest of Japan's yakuza groups, founded in Atami, Shizuoka Prefecture in 1949 by Kakuji Inagawa. Its original members were drawn from the itinerant gamblers known as the Bakuto, and it expanded its operations from illegal gambling to drug trafficking, blackmail, extortion, and prostitution. The Inagawa-kai helped organize Yoshio Kodama's yakuza amry to guard the streets for Dwight D. Eisenhower's anticipated 1960 visit amid the Anpo Protests, served as the bulk of the 13,000-strong Kanto-kai federation of the mid-1960s, and transformed a band of raging street toughs into Japan's fourth-largest crime syndicate, stretching into twelve prefectures and across the Pacific. During the 1980s, Susumu Ishii led the Inagawa-kai to unprecedented prosperity amid the "bubble" period of Japan's economy, and the yakuza came to have over $1.5 billion in assets. Like the Yamaguchi-gumi, the Inagawa-kai was structured in traditional pyramid faction, greatly stressing the familial ties among its members, and making money from gambling, bookmaking, running high-stakes casinos, and organizing offshore gambling tours. By 1979, the Inagawa-kai ran 879 legitimate businesses, including construction and entertainment companies, bars, cabarets, and restaurants. Since the Yama-Ichi War of the 1980s, the Inagawa-kai established itself as a peacemaker among the yakuza gangs. In 2009, the Inagawa-kai yakuza moved its headquarters from Tokyo to Akasaka, where their presence was challenged by local political groups and residents. Following the devastating 2011 earthquake and tsunami, the Inagawa-kai shipped over 100 tons of supplies (including instant ramen, bean sprouts, paper diapers, batteries, flashlights, tea, and drinking water) to northern Japan. By 2020, the Inagawa-kai had 3,400 members.