My daily life changed completely after that day. - Hayato, her childhood friend, comes to visit her husband, whom she adores as ``older brother,'' at most three times a week. - However, Hayato's true intentions were different. - It was in order to meet Misaki, who he has feelings for. - Unaware of Hayato's feelings, Misaki casually asks, ``Do you have a girlfriend...?'' The situation suddenly begins to move.