Operation Kikusui was a series of suicidal air attacks by Imperial Japanese forces during the Battle of Okinawa against Allied fleets in the waters around Okinawa, as part of Operation Ten-Go. The name of the operation, "Kikusui", comes from the hata-jirushi of the samurai Kusunoki Masashige.

Matome Ugaki was an admiral in the Imperial Japanese Navy during World War II, remembered for his extensive and revealing war diary, role at the Battle of Leyte Gulf, and kamikaze suicide hours after the announced surrender of Japan at the end of the war.