Hi, in studying keywords for special blades find terms like KENZEN ( perfect condition, healthy, extraordinary.....) or SANBI ( perfect, praiseworthy...)
https://books.google.de/books?id=YvqNcpSz8nQC&pg=PA40&lpg=PA40&dq=kenzen+jiba+sanbi+deki&source=bl&ots=TkXsHWRxKL&sig=syMhJJnSSYmHVKmPKaTtnU6HEJU&hl=de&sa=X&ved=0ahUKEwiyno7issHTAhUK2SwKHXsjB9gQ6AEIHzAB#v=onepage&q=kenzen%20jiba%20sanbi%20deki&f=false
Best Regards