I was born in front of my brother

He was an elder brother of Mukai who lost his parents in his childhood. Her sister, AI, continued her efforts and graduated from junior college and became an ol. On the other hand, Taichi, a younger brother, had a habit of playing, and he did not study, but indigo was very cute with Taichi, the only family. One day, a mobile phone called AI Nakata comes to contact me. "Anita's brother made a chance of a pair of sheep." The indigo which was called for the fall was infringed in front of the younger brother to Nakata, and the fuck with the younger brother was pressed...