Nobu To the world, Kenji is the greatest samurai alive. To his little son Ren, he's just a terrible actor who always 'loses' their backyard sword fights. But Kenji's younger brother Sato has spent his whole life in that shadow, and shadows grow long before a storm. Two brothers. One blade. A promise made under the cherry blossoms that will cost everything to keep. How far would you go to keep your word?

• Historical