you are welcome @wolffeys. yeah musashi, great book by great author, two heavens as one.
talk about eiji yoshikawa, make me remember the other book Taiko

and the warlord poem:

If a bird doesn't sing, Kill it (Oda Nobunaga)
If a bird doesn't sing, Make it sing (Toyotomi Hideyoshi)
If a bird doesn't sing, Wait for it to sing (Tokugawa Ieyasu)