So. Finished all six endings, fully unlocked gallery, all Phases available - far as I can tell, 100% complete.
It's a fantastic game, and not nearly as short as it appears on the surface, though I managed to finish it all in a couple of evenings. Worth the sale price, certainly.
The character designs are beautiful and realistic. The sex scenes are wonderfully animated. The plot is gripping, if a little disturbing and borderline rapey at points until you discover certain things that explain it. And the branching paths have some marvelous QoL features that make sure you can't miss or softlock anything. The little puzzles that come along with unlocking photos are fun, but can be skipped without penalty if that's not your cup of tea.
The one sore point is the writing. It's some of the worst hentai-cringe garbage I've ever read in a visual novel. Poorly-written, zero proofreading, chock full of euphemisms that belong in a twelve-year-old's smut fanfiction.
If you can look past that, and kind of mentally filter it out... it's a wonderful game, and I got my money's worth. But, I'm leaving the review so others are prepared. ^.^' Single criticism aside, I hope the developer continues to make games of this production quality - just... hire a proofreader.