Its a story of 3 persons(father son grandson) its martrial arts about a undeafeated fighting style so you se their storys 1 by 1 and they in the end of their story they fight and deafet the strongest person of that era the first one calls the last fight a draw becouse he has to daw his sword to deffend when he deals the finishing blow it ends whit itto-ryu or something and the last story is when they gotten guns and becomes the end of when pepole uses swords the main guys best friend dies so he just sits and stares at the ocean the entire time then goes and fight some pepole and the anime is over its noot long but its very good please help me=)