That JAV

The younger sister Norimu is shy and quiet in front of the family, but in fact she is sexually curious and has feelings for her older brother Hajime. One day, Hajime is asked by his parents to look after him while they go to a relative's memorial service. When Rimu expresses her feelings for Hajime, Hajime rejects her at first, saying, "We're brothers, aren't we?" But when she presses him, saying, "Just for fun, or even just physical relations," he crosses the line. The two then have sex as if they are united in their sexual desires during the two days their parents are away.