[DeepL Translation - needs review] Volume 1 Introduction: We are all human beings and have all kinds of interests and tastes. Some people can't even be talked about. Aoki, the younger brother, is one such person. He has been watching his older sister, Aune, for a long time. And yet, he happened to discover it. He never thought that his sister is doing SM play...? This is a story of a sister and her brother's secret, pure love!
(Translator: DeepL)
