[Oshima Aki] Kyoudai Igai ni Nareta nara | If We Could Be More Than Siblings [LKK•Scans]

A seductive sister whose fixation on Koeda begins with a one-way barrier meant to keep their forbidden relationship from crossing the line. Her private fantasy turns physical as she bares her heavy breasts and curving ass, pulls him close in a cramped café, and abandons caution for rough mutual pleasure. What starts with masturbation and anxious longing becomes a bold affair of hand play and oral sex, their sibling bond transforming every teasing denial into a reckless confession.