Isamu Kashiide (樫出 勇, Kashiide Isamu; February 1915 – May 2003) was a Japanese army aviator and flying ace known for achieving the highest number of victories over Boeing B-29 Superfortresses. He claimed to have shot down 26 of the heavy bombers; 7 were later confirmed.
Source: “Isamu Kashiide”, English Wikipedia (CC BY-SA 4.0), excerpt