This timeline traces the terrorist plot from 52 years ago said to have targeted Emperor Showa, including how it was thwarted and uncovered. The organization formed by Hokkaido-born Daidoji Masashi (大道寺将司) and others, together with its Wolf unit, planned and carried out bomb attacks, but there were no casualties.
In 1969, while students at Hosei University, Daidoji Masashi (大道寺将司), Kataoka Toshiaki (片岡利明), and others formed the non-sectarian student movement group “L-Class Struggle Committee” and developed a theory of armed struggle against postwar economic growth and other aspects of Japanese society. They viewed the overseas expansion of Japanese companies as economic aggression and believed that armed struggle should be waged against the oppression of Asian countries.
In 1971, after conducting repeated experiments in bombmaking, they planted timed bombs at Koa Kannon and the Monument to the Seven Patriots Who Died for Their Country. In 1972, they planted a bomb at the ossuary at Sojiji Temple, and in 1974, they planted one at the Fūssetsu no Gunzō monument. None of the attacks resulted in casualties.
The sites where the explosions occurred were temples, shrines, and memorial monuments, all of which were viewed as symbols of Japanese aggression and ethnic oppression. After the three bombings, they consolidated their armed struggle under the name “East Asia Anti-Japanese Armed Front” and called their group Wolf.
During this period, pharmacist Ayako (あや子) changed jobs to a workplace in Tokyo to obtain chemicals, while her associate Sasaki (佐々木) built a basement at home and manufactured bombs. They also pretended to join Soka Gakkai, strengthening the group’s public-facing identity.