The world of those with horns and those with kemomimi and tails――. Shigeru, who has outstanding horns, and Kizuna, who has large, fluffy ears and a tail, are childhood friends in high school. I'm tired of the noticeable horns and kemomimi that have been attracting attention for a long time, and the people around me continue to have curiosity and envy. Under such circumstances, the two have supported each other with stronger feelings than anyone else since childhood. However, one day, for some reason, we became friends who went beyond being best friends and had sex!?