my beloved sister was forced to marry a middle-aged man, shiina sora.

My sister and I have more special feelings than just a relationship between our brothers and sisters. In the future, I received a notification from the country to my sister who told me that she wanted to be my wife is cute. It is a newly approved "child-making promotion method". Suddenly, the middle-aged oyster who was forced to get married without hope and the younger sister is put out by the oyster according to the decision! My sister gradually shook herself in the skillful technique that she had never experienced before, and wished to go out! i got my precious sister slept...