The high praise this game gets is well deserved, there's good character progression, the layout was purposefully "hostile" to the MC's prospects, with multiple characters trying to corrupt him and his girlfriend, but he becomes more dominant and assertive, capable of wrestling control back when he wants to. Alice is loyal, dedicated and initially shy, which makes her "coming out of her shell" all the more interesting.
The author takes a very free and dynamic approach to character evolution. As a KN, you might not expect most characters to be so accomodating, or willing to push the boundaries of their personality type - but they do, and that makes them feel deeper. The slutty best friend who can admit her surprise at how bold her friend can be (instead of always pushing her further, these comments make for a moment of relief in that arc's tension). The domme who can admit the MC's own dominance impressed her - but soon after, impose her limits (or should I say, off-limits) - it dispels some the sourness of her character and is great teasing overall. The GF who discovers a cuckquean side while also enjoying teasing the MC.
There's a story tying all these shenanigans together. I just hope that, as it progresses, the MC will trust his girlfriend with the whole story of what's going on. For one, lying makes him feel less assertive and insecure. As their characters and their relationship progresses, it feels like not telling her everything makes the MC feel like he's being overprotective, while at the same time keeping her vulnerable because of what she isn't aware of - just telling her about the conspiracy and all the details would be the best way to protect her. Always feels like a miss when a character behaves in a dumb way, especially if you don't have choices. Maybe it's to justify later developments, but it keeps me restless and I prefer a more relaxed reading! Not enough to remove a star, but the game would be much better, imho, if the MC quickly dropped the fear and dread tropes and brought his gf fully onto his side.