Basically this is the best summary of the current situation of the game with the three main girls (Yui, Marin and Violet).
What I'm still wondering is if Violet and Yui will have sex in the same update. Which if the calendar doesn't fail, should arrive between late May, early to mid-June, assuming it doesn't get delayed a bit longer.
For development time it's possible, also Inatari clarified one thing, once the main girls have had sex, the game development will become a bit simpler. So it would make sense to me an update focused on the sex scenes of the two of them, and then start with a new phase of CotV.
