Callisto

Callisto and king Olaf became allies when King Olaf pleaded with her to save the next generation of Castello by birthing a child for the King.

King Joel was the problem because his daughter is the queen, he wouldn't allow another woman to bear a child for him but the reason Shamira couldn't bear one soon intrigued him.

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Flashback

Callisto had just been summoned by King Olaf of Cade to discuss the issue regarding Cyprian's tyranny.

" About four decades ago, King Joel and hector sought my help. I think hector wanted favour and that snake Joel wanted something in return. We both know King Darius had a child from the hybrid Hirassia. He killed her to conceal the secret hoping to wield their power. I don't know the full story but I helped them make a pact where I bind Joel's daughter to him at the sacred ground in Perra. That girl is the answer. Kill her and the house of Castello will fall. Verdes will be yours"