Koizumi family

• Matajirō Koizumi - Minister of Posts and Telecommunications, he was known as the "wild man" and "tattoo minister" because of a large dragon Irezumi tattoo on his back.
• * Jun'ya Koizumi - Son-in-law of Matajirō, he built a kamikaze airfield in 1944 at Kaseda, Kagoshima. Served as Director General of the Japanese Defense Agency.
• ** Tetsugoro Iryo - nephew of Jun'ya and cousin of Junichirō Koizumi, died a kamikaze pilot.
• ** Junichirō Koizumi - son of Jun'ya and grandson of Matajirō. Former Prime Minister of Japan.
• ** Kayoko Miyamoto - ex-wife of Junichirō Koizumi.
• *** Kotaro Koizumi - actor, eldest son of Junichirō.
• *** Shinjirō Koizumi - politician, second son of Junichirō.
• *** Yoshinaga Miyamoto - third son of Junichirō, has never met his father.