Determine if the sentence is true based on the text below:
The Mitsubishi J8M "Shusui"was never to be used after the World War II

The Mitsubishi J8M "Shusui" (Japanese: J8M , literally "Autumn Water", used as a poetic term meaning "Sharp Sword" deriving from the swishing sound of a sword) was a Japanese World War II rocket-powered interceptor aircraft closely based on the German Messerschmitt Me 163 "Komet".
It's impossible to say