Sanctuary: Seiiki (2023)

Both introduce you to the world of sumo wrestling. Sanctuary Seiiki focuses more on the old traditions and pro level sumo wrestling. Shiko Funjatta is a lighter drama that focuses on the sport from a modern sport perspective on a collegiate level.

Modern times but traditional values still used. Might not be logical but when I was wounding why I liked this show besides the underdog plot.... I decided it was the traditions staying the same. This other drama popped right into my head as being the same style.