Keikage

The Keikage (渓影; Literally meaning "Valley Shadow") is the leader of Keikokugakure and is typically the strongest shinobi in the whole village.

Like most other ninja villages, the new Keikage is usually elected by the old Keikage once he retires. However, if the old one was to die or be incapacitated before choosing his successor, the Chasm Daimyō would appoint a shinobi as the Keikage upon recommendation by the village's jōnin council. Afterwards, the candidate will need the approval of the village jōnin to become the official Keikage.