If it's the story quality that you are looking for, I have some recommendations.
The last sovereign has one of the best adult game stories I have played. It is rpgmaker though, so you need to be ok with that. It does do a lot more than adult games usually do with the engine and has a well thought out combat system, investments and tons and tons of decisions and consequences.
Out of Touch has a very good story. It's an koikatsu AVN, though I think it looks a lot better than most koikatsu games. The story is hard to describe without spoiling anything, but it's a wild ride with a lot of unique and cool elements. Heavily recommend it.
Superhuman is another good one. Think an avn with the protagonist being a mix out of the protagonists from prototype and the darkness. It's a 2D avn with a big decision focuss. It works a bit like the time management in persona. The story is mostly linear but you get fixed points were you can decide what to do, like training or spending time with a character. The visuals start out a bit rough, but get better as the game progresses.
None of these games are finished yet, but they all have a lot of content. The last sovereign has by far the most and is on the last part of the game currently getting developed.
You mean in 0.4?