SSIS-300 Alone with her beautiful older sister... Suddenly, a deep kiss, licked all over in a lewd way, lost in sex. Am I the worst for being like this…? Aoi Tsukasa

Her older sister suddenly shows up at the apartment we live in together. 'Can I stay over tonight?' She had gone home to visit her parents but decided not to go back, leaving us bewildered. The next day, she leaves for Tokyo for a job interview, just as her sister arrives. 'It's fine, just keep it a secret from my little sister...' For the three days she's away, I'm alone with her incredibly beautiful older sister. Her intense kisses and obscene licking all over leave me completely smitten... The ultimate reverse NTR drama is born!