The Japanese billionaire is the founder and president of Fast Retailing, parent company of Uniqlo.He's the richest man in Japan, and despite being in his 70's, has big plans to grow the company even further.We speak to Tadashi Yanai about fast fashion, Chinese manufacturing, and global expansion.And we find out how Japan's richest man spends his leisure time.Produced and presented by Mariko Oi(Image: Tadashi Yanai in 2017. Credit: Getty Images)