Mitsubishi Ki-200/J8M Shusui - a story of the no.1 prototype.
As official records tell, the no.1 prototype crashed during the test flight at the Oppama airfield near Yokosuka on July 7, 1945.
The airframe was thought having been abandoned when the war was over but, in fact, preserved under the ground of Nippon Aircraft in Yokohama to keep secrets.
In June 1961. it was digged up as a relic.
Mitsubishi restored it in 2001 based on about 1,600 sheets of drawings.