Just follow a story. There are 4 different paths in total with Noriko, but the sex scene should be hopefully in 0.7 update.
Maybe you downloaded an older patch. The actual one is 0.6.2. With Noriko, there isn't much in the game yet. In Maledom/Femaledom path she masturbates and in Corruption/Reject she sucks you. Pretty sure even the free 0.5.9 patch has these scenes. For the Noriko sex scene, we have to wait till 0.7, which should be hopefully coming soon. Since it's the best H game I have played and Noriko's best girl without a doubt, I am waiting for it every day.