Liking the start, I have hopes you'll steer this through to be a potentially great game. A couple of thoughts -
You are building a sandbox at the moment - which is quite polarising for your users - what typically helps is a hint guide, faces on a map, achievment checklists etc. Have you had any thoughts in that direction yet for planned 'tasks' for the MC?
The text makes a reference at least once to the girls being 18, which is great and good of course. But I'd say in fairness they are a very 'under-devloped' 18. Do you have any plans for allowing the ages of the twins to be user-configurable?
On the subject of which, players often feel more immersed if they can set the MC name, even if the NPCs names are fixed.
Obviously you are still in the very early stages of development so well done for putting ANYTHING out here and I wish you all the best in your ongoing endeavours.