>>211993223
He has additional novels that take place in various places in Asia but no follow ups to Shogun specifically. The main character of Shogun basically falls out of history but Toranaga has a decent amount left to do, from the battle of Sekigahara (which is what the show just about leads up to) to The Siege of Osaka which is the end of that era and the begin of the 250 year Tokugawa Shogunate. If they wanted to they could also go beyond that. There's enough drama in the early decades of the Shogunate to tell stories based off of. They could also do a prequel focusing on renamed Oda Nobunaga or renamed Toyotomi Hideyoshi.
I just don't think they do a show focused 100% on Japs. Worst case scenario is we get Shogun but it's about how Yasuke actually saved Japan.