Subaru is disappointed that she had to be the last to find out that Wataru is not her biological brother and that he has feelings for her that go beyond sibling affection. To give her time to think, Wataru moves out of his home and temporarily stays with Subaru's friend Arata. However, it doesn't take long for her to miss him. When Wataru shows up at home again to grab some clothes and schoolbooks, he seizes the opportunity to take the initiative...