Segalacious has written a fun guest article, namely a hypothesis on the significance of an item that has accompanied Ryo on his travels without its secrets yet being unveiled: the mysterious white leaf!
https://www.phantomriverstone.com/2020/11/mystery-of-white-leaf-shenmue-theories.html
https://www.phantomriverstone.com/2020/11/mystery-of-white-leaf-shenmue-theories.html