Miro was the son of the cousin of Miya Ansho, the governor of Naishou Province. A talented poet with an inability to focus his attention, he barely managed to pass his gempukku. His fiancé, a maiden of the Kakita family, fell overboard while on a boating trip on Tsunegawa Lake. Distracted by a passing bird, Miro was too late to aid her. Some months after this incident, Miro was summoned to serve in Toshi no Naishou by Governor Miya Ansho.