After living 10 years away from his hometown in a foreign country, Kanata returned to settle there to continue his studies. He was surprised to see his older sister and his other childhood friends again to see that they had all grown up and changed a lot.

Upon his arrival, Kanata realizes that he will not only live with his sister Touka in a house, but with many attractive young women including Touka, Aya and Kazane in addition to the cute landlord named Rina and the mature and attractive Sakura-sensei.

Needless to say, it then becomes difficult for our hero not to look at them with a lewd look when these young ladies have still not lost their habit of living only between girls, leading him into the most exciting situations.

A tumultuous life is looming for our hero...