Like the Raiden, two Shisuis were brought to the United States for testing, one for the Army Air Corps and one for the Navy. This one is the one that went to the Army Air Corps; Planes of Fame acquired it in 1948 as the very first plane in their collection. The Navy's Shisui was on display at Naval Air Station Glenview (where it had been evaluated) for some time, but was ultimately scrapped.
The other surviving Shisui was a nearly complete fuselage that was literally found in a random cave in Japan in the 1960s. It has now been fully restored and is in the in-house museum at Mitsubishi's Komaki plant. Since this was an incomplete fuselage without wings, it is unclear as to whether this was one of the seven prototypes or an incomplete example of the production Shisuis; it is known that while no production Shisui was ever completed, their construction *had* started shortly before the war ended.
Either way, the Museum's Shisui is the only complete survivor and the only one verified to have been a flying aircraft.