黄泉のツガイ

In a world where some humans command paired supernatural beings, twins Yuru and Asa are tied to a powerful birthright. Yuru lives quietly in an isolated mountain village, hunting and foraging near two stone guardians. Asa is said to perform a mysterious duty while confined inside the village. The calm ends when the village comes under attack and Yuru is forced away from home. The guardian statues join the fight, revealing that Yuru can command the beings connected to his birthright.