Simple trade contract suggestions:
Wakahisa supply to Goketsu, netting 10,000,000 ryo for both:
(Generally things a food insecure island nation would have)
- Megalodon oil, Ivory, soaps and cosmetics. Other ocean megafauna luxury resources
- Ore not suitable for weaponry ( Copper, manganese, lead? Not a metallurgist)
- A variety of Seafood in small quantities
- Spices common in Water but uncommon in Fire
Variety of seafood in small quantities? It's a fishing village for god's sake! This one should be large quantities while sharks are relatively smaller.