My brother and sister are three brothers and sisters in the order of me, my sister and my younger brother. Sukegaki's younger brother has an unusual obsession with my sister's boobs in the starry reserve army. On the other hand, I have a hard time pretending not to be interested in my sister's boobs every time I see them. My brother is so busy with his sister's boobs that he only cares about it for me... Actually, I'm a more patience-squeezing bokkin.