I love games with a clear focus on hypnosis and mind control, yet after almost an hour I have to say it's not worth it.
The diologue is the biggest problem so far. Most sentences are missing dots at the end for example, one time I even saw a question use the spanish "¿" in the middle of the sentence. The dialogue is also written in, usually, slightly broken english. The balancing in combat seems to be a little whack, with all 3 gun skills using way too much bullets for the damage they do, and the fire skill which is an AOE being absolutly the best option even in single enemy battles because of the decent cost and high damage. Succubi, the only enemy you can actually fight up to where I played, took half their max HP of damage when you use the fire skill on them.
You also had to go through the same dungeon twice and while monsters respawned, only a few new chest spawned (or I missed them) so the entire second time was pretty much useless since it doesn't seem like you can actually level up, and the cost of mana and hp restoring potions and bullets (which you use to attack besides the skill) is not worth the battles with the succubi, so you should only run through almost the exact same dungeon again for no real reason.
I would recommend to actually make the second trip feel better, e.g new loot, enemies (that you can actually fight and have scenes), actual xp system to reward fighting, or a new better skill that helps against either the overword enemies you can't engage in an actual battle, or a skill that makes you feel like you actually improved since last time.
The art is definetly not the best , but I think it's fine. Having multiple variation in a scene is a neat idea, but a bit overdone. I rather have one good CG rather than 6 slight variation to show movement of breasts or a penis.
The worst offender (besides the actual dialogue) is how hypnosis is handled. A demon you met and gives you accsess to mind control powers uses hypnosis to shape and control others. The problem here is that he simply talks with confidence while suggestig something, while the text box just says ((hypnosis)) to indicate that it had hypnotic power behind it. A lot of other hypnosis focused games put more focus on it, either with a proper CG, dialogue to indicate change or even a proper map to enter someone's subconscious and change them from the inside. "Star Knightess Aura" for example does a good job on the hypnosis aspect, while "Nano-Control" feels like what Sexual Control tries to be.
In conclusion, I would think about finding an english native proof reader to check for errors as well as quality control, as a lot of the dialogue seems pretty generic or incomplete at times.
Afterwards the hypnosis sections need to change and given proper focus, maybe a new mechanic or at least a redesign of how the game conveys the hypnosis that is happening would make it a lot more interesting.