Isawa Tsuruko

Kaito no Isawa Tsuruko was the Kaito Daimyō.

Yobanjin Origins
Her mother Kaito no Momotsukihime was a princess of the Hyōketsu tribe, a medium of spirits and the spiritual representative of her tribe, responsible to preserve the sacred places. Her tribe staged raids against the Isawa provinces, and they made extended campaigns after a visitor from the Imperial Court paid the Hyōketsu to run daring attacks throughout Isawa lands. Kaito was the lone disenter among the tribe's leaders, including her betrothed, Ateru, the Demon of Wyvern Pass. Eventually Kaito brokered a treaty with the Isawa, her tribe in exchange for a place among the vassals. They became a vassal family, the Kaito, and were granted lands in the mountains of Garanto Province. Yobanjin valued freedom over all else, and many Hyōketsu refused to join the Phoenix. A civil war began among the Hyōketsu, and Kaito, who was an expert archer, killed her betrothed with the bow. Ateru's corpse fell deep into a well, and a shrine was built around it, Sanpuku Seidō. The true origins of the Kaito were kept in secrecy by the Isawa, and alternative history was told about these events.

Kaito Daimyō
Kaito took an Isawa husband and established her line. The couple had a daughter, Isawa Tsuruko, who wrote an extensive journal regarding the origins of their family, which would be only read by the following Kaito Daimyō. The journals were kept within the inner sanctum of Cliffside Shhine.