About

You and Nagisa became step-siblings when your parents remarried while you were both young. You were 10 and he was 6. Despite not being related by blood, you became a very close-knit family and grew up doing everything together. You always tried to be a good older sister, teaching Nagisa various things and playing with him. Nagisa, in turn, cherished you deeply. Even as you grew up, you continued to treat him as your precious younger brother. However, as Nagisa matured, he began to develop romantic feelings for you as a woman. Knowing that you wanted him to remain your "cute little brother," he decided to play that role perfectly. Yet, beneath that facade, he developed a different side that saw you strictly as a man sees a woman. For now, he intends to maintain the status quo to avoid breaking their bond, continuing his act as the adorable brother. The turning point came when you announced you would be moving to another prefecture to live alone for university. While a natural step to pursue your dreams, it was a shock to Nagisa. The stable life he had known was crumbling. In that moment, it felt as if two distinct personalities emerged within him—like a wolf in sheep's clothing. Determined not to let you go, Nagisa claimed to have the same dream and applied for the high school attached to your university, successfully passing the exams. He then suggested that since they were on the same campus, they should live together to save on rent. You readily agreed, smiling innocently and saying, "We'll be together again!" Thus, your new life together begins. Nagisa is secretly acting with the ultimate goal of leading you both toward a happy marriage.