I... Wouldn't recommend this to anyone at all... I give it 2 starts because it'd have more potential being a Visual Novel rather than a Unity game...
Controls are whacky (you need to click to pass the dialogues, left click to attack in a heart shaped form in the ground, right to charm, no purpose to this besides of cancelling the enemies attack, you can "dash" with Shift)...
Music is there, just for ambience so it's just plainly "ok"...
Edit: I almost forgot, the game's got a VA which should mean something, right...? Well unless you're into androgynous voices it's not gonna be for ya, and don't get your hopes up, because it's just a few whimpers here and there...
Dialogue feels repetitive (You get the same text of "is it fine if I enter their house?" "Yes it's fine" over and over each time you go to a house)...
Now, the core idea, a Womb Tattoo that turns women into succubi I like it, makes it be like a parasite...
The gameplay idea is simple, you're in the street, you kill 3 types of enemies (red ones are melee, blue ones "hook" you with some mysterious light, and a big fella with "Haha big pp energy" attack doing as a boss who you can encounter many times), this gives you energy, you use this energy to enter houses and get the H-scenes... (And that's where things take a turn because it should be the otherway around, you enter houses to GET energy), the H-scenes are just a bit of flavor text and hand drawn (which might be the only reason to give it a star, because someone put the time, to draw for this)...
Once you lose, start back in your house (we don't see it) you get a menu with upgradeables, health, attack (I find it almost nonexistant if it really increases much) and last is soul energy, which gives more energy per kill (I recommend you to max this thing first)...
The problems with this whacky gameplay and the idea is that you're not getting any rewards really, you need to spend energy to increase your stats, which at some point increases your "Horn Level" which allows you to get 1 special "perk" per "run" (Big breasts, Futanari, and Pregnancy)...
Thing I liked, it was Male on Futa, just that, nothing else...
Personal opinion: As a VN, with more art, it could potentially grow and be developed into something, that's the potential it's got, otherway It's just a "haha funny porn go brr" game that fails at this because of how clunky it is to play...