Azu is living at her parents' home in the countryside, spending her days without any excitement. She was interested in erotic things and was suffering from information and videos on the internet. One day, when Azu came home, her house was buzzing with excitement because her sister and her husband had returned home for the first time in a while. That evening, after her party, Azu sees her drunk sister's husband's cock. She is curious about her stepbrother's cock, which is of a great size even though it is not erect! After that, Azu, who is still preoccupied with her stepbrother's cock, finally sneaks into the room where her sister and her husband are sleeping...