さくら色カルテット

In the near future, bioroids called Iris were created using genes from animals to be the perfect partner for humans. They now live together with humans in harmony. Ryouta is a meddlesome student at Kurama Gakuen who comes upon a stray Iris named Sakura. He decides to take her under his wing and to become her master, but then Sakura’s older sister Ui shows up, along with a suspicious guy Ogami Shingo. Even his schoolmates Ayano and Momoka get involved. It seems that she holds many secrets…