Cloud Maiden is an Adventure Game for adults which combines the Gamebook storyline format with images and short animations. It features relaxed gameplay without any “Game Over” possible, and a flexible interface intended for PC and mobile devices (an Android App is available for Backers Releases).
It is loosely based in the universe of Concubine and mostly features submissive positions for the player, though you will sometimes be able to “take the lead” and have romantic interactions.