As each day passes, Misako loses her sanity, no longer feeling guilty about betraying her other half. What once was a sin is now a pleasure she cannot live without. She though her secret love affair with her son would be kept under the dark, but things take a big turn. What surprising actions will Kazuhiko take to fulfill his lust? How will Misako deal with it?

Misako was in shock when she saw her stepson Kazuhiko engaging in a sexual act with her sister Emiko. Having been surprised by this incident, Misako found herself feeling jealous and begins to devise a plan to win Kazuhiko back. What obstacles Misako overcome to get the lust she desires?

Kazuhiko continues the sexual rendezvous with his step-mother’s Sis, his aunt, Emiko. Now his step-mother Misako’s jealousy grows by the second. She soon realizes that she no longer needs her husband Yosuke. Instead, the one she truly desires both mentally and physically is Kazuhiko, however she only has a few days to make a decision whether to be his lover or go back to being a normal family.