my brother is married and lives with his wife at my parents' house. however, my brother doesn't come home from work until late at night or dawn, and sumire-san, my brother's wife, continues to wait patiently until late. seeing that figure, one day i fall in love with her and confess, but she naturally refuses... however, even on sumire-san's birthday, my brother doesn't come home, and i end up hugging her, who is all alone. and then i end up having sex with her over and over again until morning. and then creampie...