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#2d, big ass, big boobs, groping, incest, japanese game, point & click, sleep sex, vaginal sex
#1 Story. It is summer vacation, but the protagonist is not taken anywhere. Then he receives a phone call from his aunt saying, "Won't you come to visit me? and he gladly accepts the invitation. The protagonist is happy to accept the invitation, and goes to her house right away... Nighttime Mischief At night, when everyone has gone to sleep, the protagonist can sneak into his aunt's bedroom. Repeatedly pranking her will raise her "sexual maturity level" and increase the range of her pranks. Number of CGs 15 basic pictures + differences, standing pictures, etc.