Sound like but it isn't. A national treasure is another thing.
So what is this 'other thing?'
Regarding awards, he was awarded the Purple Ribbon Medal and also the The Order of The Rising Sun from what I can make out. Whilst still alive I might add. Now only about 15 people ever have been awarded higher than that and they were mainly royalty.
It is widely quoted that he was declared posthumously by the Japanese government as a Sacred National Treasure.