The only opponent listed for the Yayoi is other Yayoi armies. The Meshwesh database gives a date range of 500 BC to 274BC for the army list. The Jomon culture lasted from 14,000 BC to 300 BC, so there is some overlap between the Yayoi and Jomon timelines. I had the idea to field a Jomon culture army using the Yayoi list and minimizing/maximizing some of the troop numbers.
The army options allow for Heavy Foot with dagger-axes, Light Spear, and masses of troops with bows, fielded as Bow Levy, Skirmishers, and even a few optional Archers.
The two army lists would look like this:
Yayoi: Five Heavy Foot, five Light Foot, two Skirmishers, and six Bow Levy
Jomon: Two Heavy Foot, two Light Foot, twelve Skirmishers
I finished two test stands; one for each army. The slingers are Yayoi and the bowmen and Jomon.
Not my best work but it did produce some ideas on how to improve.
The Yayoi will be Khurasan figures used with minimal conversion. Many of them are carrying small shields and will have bronze-headed spears.
The Jomon will be Eureka brand Tlingit and Mound Builder figures with suitable conversions. Most of the Skirmishers will be wearing animal hide clothing, the Light Foot will be wearing simple cloth, and the Heavy Foot will be wearing patterned clothing in brighter colors with chest armor made from strips of bark. There is not a lot of information about Jomon clothing so this is all a best guess. Weapons will be bows with obsidian-tipped arrows and spears with stone heads.
