. >> translator: this is my certificate from the cuban ninjutsu association. >> reporter: sabiron opened his training studio 12 years ago. he teaches ninjutsu for physical and mental discipline. he developed a training program based on mart wal arts movies. the strict regimen begins with the basics. students practice somersaults. so they can find their feet quickly in any situation. and, of course, no ninja can be without this, the throwing blade. most of their equipment is home made. here they practice ninja walking. every nerve in their bodies must be focused. ninja have to be ready for anything. sabiran and the other ninjas are hoping the training environment will improve along with cuba's foreign relations. >> translator: we look forward to having exchanges with ninjas in japan and other parts of the world. >> reporter: inspired by the make-believe of japanese action movies, cuban ninjas are training hard in the real world. nhk world, havana. >>> japanese wines have been getting increasing praise from around the world, and one person behind this is a young winemaker in central japan.