When we were young, our mother would tell us stories of the two kingdoms. Our home, and theirs. Since the beginning of our father's reign as king, the two kingdoms had been at odds with one another. The insects from the kingdom in the forest were known to travel the fields, eating our kingdom's rare and delicious fruit. Our father hated the other kingdom and blamed their king for the problem, attacking any insect that he came across.
After the first attack, both kingdoms locked their gates from one another and the feud was started. We were forbidden to play in the woods after that. Not that we have ever been known to listen.