The best H-game in my opinion.

An excellent visual novel.
It has a very cool story (They said it's the first part of a trilogy.)

It also has a fairly basic management part, but it does its job.

Excellent writing of the characters and the interactions between them.

Lots of H-scenes with many variations based on your choices.

The drawing style is my favorite element of the game, perfect for the type of story being told.

To recap:
considering drawing style, H-scenes, story and characters,
it is 100% recommended

As for early access, updates arrive approximately every 2-3 months.
I hope that at least this first part will sooner or later see the end and be released, because it deserves to be complete.