Recently, my older brother got married and started a new life with his wife in a Tokyo apartment. At the wedding, I saw my sister-in-law—she was incredibly cute, had a perfect figure, and matched my ideal type exactly! Desperate to get physically close to her, I decided to move in with them as a temporary housemate. Although my brother was hesitant about having me live in their newlywed home, I managed to convince him, securing a limited-time arrangement for the three of us to live together. During times when my brother is away, I gradually close the gap between me and my sister-in-law. Ultimately, I dream of fulfilling my fantasy—making physical contact with my brother's bride right in front of him.