I am a fan of the old Shogun from 1980 with
Richard Chamberlain , so I enjoy the retelling of the original story big time... So far the story follows quite precisely which is a good thing... The locations are great, the VFX is decent, there is a respect for source material which is good. It is nice that the Japanese actually speak Japanese ... Overall I would suggest watching "Age of Samurai" documentary before this as it perfectly sets the scene to understand which period this story covers. The only thing that this show is inferior to the original is the main actor can not replace Richard Chamberlain, nor anybody can replace John Rhys-Davies well enough , those actors were legendary, that is why 1980's version is totally worth a rewatch...
