This game is great! I'm a huge fan of hypnosis and seeing a whole game with Undertale/Deltarune characters based on that concept sounds like a dream come true to me, plus the art is really charming and depicts that mindlessness of hypnosis really really well. And even though usually I personally wouldn't care too much about the human characters, your designs for them looked really nice and I looked forward to see their stories unroll.
What I could never expect though is how this game is an exact copy of Nano Control. Of course this is not a problem per say, since it's still doing it's own thing, but some of the stuff done here are direct plotpoints that happen in Nano Control and it comes off as a needless copy of the original source (main character gets tricked by magical mysterious person in the outskirts of town; poisoning the water supply to make the town not care about what we are doing; controlling people by slipping something on their food; the whole mindbreaking segment is basically the exact same; ominous entity that sells costumes for the girls; I could keep going but you get the point). I wanna reinforce that this isn't a bad thing at all. In fact, Nano Control is a fantastic base for a hypnosis game, but I just wish the details here were more unique instead of just disguising everything in a Undertale/Deltarune coat of paint.
(Also just something else I wanted to add. I saw a prior comment mention this same thing and you replied saying Nano Control was mentioned in the credits of the game as a direct inspiration, but I'm not sure what credits you were referring to cause I didn't find any mention of it in here nor on the patreon, but I could just be blind)
In conclusion, I really like this game. The art is good, the hypnosis hits just the right spot (for me at least), just the fact that we have Muffet here is enough for me to praise it to hell and back. Can't wait to see how it evolves from here! My best wishes to you and the development !
(also I'd KILL to get Bratty and Catty in this game, just sayin....)