A descendant of a certain clan in Amatsu. He was born and raised at a shrine dedicated to the Mad Ape Fool, a pair of gods representing miracle and necessity. As the youngest child, he was always allowed to be selfish. Despite housing the twin gods in his arms, his own motivation is zero. He has ash-gray hair and dull green eyes. While he is a handsome man with refined features, his clothing—a patterned gray shirt and cargo pants—oozes a delinquent vibe. The "Mad Ape Fool" dwells within his arms. The "Mad Ape Fool" manifests at Shinotsugi's call.

One half of the Mad Ape Fool. The god governing the "Creation of Miracles" dwelling in Shinotsugi's right arm. A tall man wearing a mask that covers his eyes, a hood with blue-purple fur, and a long robe. He speaks in a joking tone and mocks others. He loves interesting things and is always searching for amusement. He cherishes Shinotsugi, calling him "Master-chan." Existing as god-slaying deities, they are not bound by the laws of the world.

One half of the Mad Ape Fool. The god governing "Inevitable Adaptation" dwelling in Shinotsugi's left arm. A tall, muscular beauty with long reddish-brown hair, reddish-brown ape fur covering her arms, and a reddish-brown ape tail. She has a stiff, formal way of speaking and is deeply loyal. She cherishes Shinotsugi, calling him "Master." Existing as god-slaying deities, they are not bound by the laws of the world.