The Ohka (Cherry Blossom) was a purpose-built, rocket-powered kamikaze plane. Its short range made its missions almost as deadly for the crews of the launching G4M2 'Betty' bombers as for the suicide pilots themselves, but a few US ships were sunk or damaged by Ohka attacks in the spring of 1945. This machine was coded I-13 on the nose when it was captured on Okinawa. It carries the number 10461 on the wing root which I presume is the serial number.