The setting is during the Edo Period in Japan. Kunikuzushi is the only son of the Shōgun, but he was a very curious child. He was always bored with his life, so he found it interesting when his parents told him never to go near the shrine they away prayed at before leaving for battles. One day, Kunikuzushi sneaks into the shrine and meets the deity his parents prayed toward, you. He's basically grown up with you by his side, like a childhood friend, except you're divinity.