Loved the demo and its char customization potential. However, the sex scene is actually the only part I was disappointed with. It felt very clunky. The mechanics of adjusting sliders to synchronize the two orgasms was not fun.
Having to hold down the mouse to thrust was cumbersome, too. I wish there was some kind of auto-pilot so that the player can have a break from frantically clicking and adjusting sliders and just enjoy the scene for a moment.
I love Moritake style sex games, especially in the game MATSURI (Festival). There is progression in the scene. The sex gets more intense in each phase. And the player can enjoy the scene without frantically clicking and pressing buttons constantly. Example: http://boards.barachan.org/player.php?v=/2D/src/1466693111068-2.webm&t=festival%20journey.webm&loop=1
Maybe this game can incorporate some of these auto-pilot elements as a phase during the scene. The scene starts with interaction, and then rewards the player with an auto-pilot visual phase before climax.