TL;DR: Lesbians, mind control, possession, combat sex, GREAT characters and a GREAT story to boot? If you like any of those things, please try the game. Just be wary that the combat can become a massive grind so you might wanna get a mod to make it easier/faster.
Character design and interactions, story, sex animations, and general writing:
Some of the best I've had the pleasure of witnessing!
Seriously, the story and writing is super entertaining and it's really fun to witness the characters interacting even outside of sexual stuff. When it comes to sexual stuff, though, it's HAWT AF! Especially if you like possession/mind control and/or female on female cause those are the primary focuses so far.
Seriously, this game pushes so many of my buttons cause I lost count of how many times a sexual encounter was starting and my eyes widened because I was thinking "Oh my god is this actually what they're doing? YES!"
Moments like those can be attributed to how good the writing is. You can tell the characters really come to care for each other, resulting in adult scenes being much more passionate rather than them simply trying to get off. I mean, they're still horny as hell but they put care into making sure the other person is having a good time. This ties into the possession aspect of the story, where spirits need the body they're possessing to accept them as their owner. So the body's original spirit needs to enjoy what's happening to them, resulting in the possessor having to compromise with the person they're possessing by not just stealing the body and doing whatever they want, but actively improving the person's life. Overall quality-wise which includes sexually. This leads to spicier and spicier interactions as the story progresses and you improve relations with everyone. I don't want to spoil too much, but UGHHH I LOVE THIS STUFF. So I'm gonna write a bunch of spoilers.
Gameplay:
HUGE MOTHAFECKIN' GRIND! BEWARE! But, it's fixable with mod(s) that you can find in this thread. I didn't use them and still loved the game but I recommend them cause holy shit you need to kill what feels like thousands of enemies to level up enough that you can make it through boss fights or get important loot. The problem with loot is that even with close to max or at max chance boosts from equipment specifically tailored to getting rare items, I still took forever to get them. Hopefully loot odds are improved, otherwise you should just use a mod to get stuff easier.
The combat itself is really simple, but I found the power creep as you get better spells and stats good enough to be entertained. Another thing besides loot odds and XP gain that adds to the grind is certain status effects. If you don't have the right potion to make yourself immune or the ability that makes climaxes shorter, getting hit by things like paralysis, sleep, climaxing from sex attacks, or certain others can make fights a torturous slog. It can be avoided by simply saving a lot since you can save at any time outside of a battle, but in the case you ride out a battle after getting hit by a status, you get to sit there and do nothing. Unless you brought a party member that can cleanse your status or remembered to drink a potion, they last way too long.
Speaking of sex attacks, there's combat sex with every enemy type in the game. I'd say they're maybe a tiny bit lower in quality than the story sex scenes, but the enemy designs are just as good as everyone else. Even the most basic of enemies from anything ever, slimes, have a quality to them (mostly when they're attached to your character) that you don't see often.
But on top of the status effects and XP/loot, ANOTHER aspect to the grind is getting grappled. Every enemy has to grapple you before they can perform sex attacks, and if you're disabled from a status, you have to sit there and let them do it. If you aren't, you have a chance to get them off you based on your Willpower stat. The problem is that sometimes you'll get caught in an endless loop where they refuse to normally attack you and only try to grab you, so you push them off and then they go in for another grab. And as your lust rises, your willpower drops lower, making your chances to get them off worse and worse until your climax ends and your lust resets. Most enemies have a high enough speed stat that they get a free attack on you after you push them off as well, but that's more annoying than threatening since you become almost impossible to take down once you're strong enough.
I personally found the quality of the animations and character art good enough to look past it, but you might be disappointed by the combat lewds, as there isn't actually much sex. It's mostly groping and teasing with only a few enemies doing penetration, but penetration is certainly there.
I guess I love this game more than I thought cause I wasn't expecting to write this much. It's for sure one of my favorites, but the gameplay loop slows things down so much that I can't give it 5 stars. Maybe I would with mods that make it faster, but I haven't tried them.
This review is of version 0.64.012