A kid with a magical sword and a wandering road is the entire premise, and the show builds the rest from pure momentum. Episodes are built to be watched in order because each one changes what you think the adventure is about. The sword doesn't solve problems. Suzunosuke does, one town at a time, and by episode ten you've stopped waiting for the plot to arrive because the plot was always just him moving forward.
Akadou Suzunosuke is a 1972 adventure TV.