SSIS-300 Alone with my girlfriend's beautiful older sister... A sudden tongue kiss, a naughty licking, and a crazy sex experience. Am I the worst like this...? Tsukasa Aoi

Suddenly, his girlfriend's older sister comes to the apartment he lives with. ``Can I stay over tonight?'' They return home but are confused by the older sister who doesn't go back to her parents' house. The next day, she goes to Tokyo to look for a job and replace her sister. It's okay, just keep it a secret from my sister... For three days without my girlfriend, I was alone with my beautiful sister. Older sister Tsukasa's deep kiss and naughty licking