I only ever arrived at this game due to the truly low number of games that allow you to play as a female protagonist, and the nearly nonexistent number of games that allow that with a younger sister character.
However, despite this game checking those very rare boxes in tandem, it's just an awful experience all around. The primary two issues are the dialogue (with an emphasis on the MC's), as well as the absence of player choice.
Dialogue. It's bad. As stated, it's largely a problem with the MC, but all the characters just act exceptionally artificial. The only real reason the MC is the worst of the bunch is due to the lobotomy they must have undergone prior to the story to make them this incapable of functioning, and I mean that wholeheartedly. The MC is an absolute idiot, and a childish one at that. Sitting through their inner monologues is alone enough to drop the game, and their spoken dialogue is in no way better. They consistently forget story beats, tasks they're supposed to complete, and perhaps even to breathe.
Player choice. It's absent for almost the entirety of the game. There are choice-selections present constantly that alter exactly nothing, as well as sandbox sections that offer nothing. Kinetic novels are not necessarily a bad thing for telling a story through the visual novel medium, but the way it presents itself as being a choice-driven novel, as well as the breadth of actions you're forced to partake in, is not one of these instances.
Some individuals have pointed towards the lack of choice as an issue with the pretty rapey parts of the game, and I agree to an extent. Depending on the character, I might be more than happy to engage in this, but with some characters I simply have no interest in their pursuit, which I am not given a choice in. I, as my character, would like to be able to make those decisions, as there are a lot of different characters in the game. The lack of character choice also means that you are completely at the mercy of that aforementioned MC stupidity, rather than being able to manage it yourself.
The visuals are not particularly stunning. They're not bad by any means, and some places look quite good, but they're not in any way enough to justify sitting through the experience, as the characters are at large not especially expanded upon either, leaving it essentially as a time-sink sex animation. The one thing I do want to point towards looking rather poor is Ellie's face (this being the redhaired girl on the cover, and the younger sister character). She looks outright inhuman. Her facial features are too small for the size of her head, is what it comes down to, but it makes her look like a lizard person.
My overall conclusion is that this game is not worth touching without a complete rewrite. I do want to give credit to some interesting dream sequcences and allusions at the beginning of the story, but these later fall flat.