After losing his parents, Yuu Hasunuma never had a stable home due to his relatives' opposition to taking him in. As a result, he moved from one family to another until he finally settles with his mother's cousin. Although his uncle doesn't treat him as a burden, the condition he gave Yuu was to stay away from the storehouse.
However, when his uncle is hospitalized, Yuu has no choice but to enter the storehouse. Inside, he is frightened and amazed to find a horned and hoofed voluptuous woman who promises to grant his wish in exchange for what he holds dear. Having never experienced love from family, Yuu wishes for one. Little does he know, that deal with a demon could lead him into serious trouble.
