I've played this game quite a lot over the years, following its development and I can say for sure this is one of those rare finds.
This is definitely, currently, the best trainer type of game I know of.
It is very non-rapey, with every girl being in a consensual or at least "mutually benneficial" relationship depending on how you play it and you can go full lovey-dovey with them focusing 100% on a single girl if you want to.
A summary is that, as a mutant, your touch (and bodily fluids) is both something that inhibits mutant powers and very slightly addictive.
This makes girls search you either to inhibit their powers or conditions for their bennefit or to get a "fix" of your touch, which you can deny and even make them immune to your addiction with different means if you want to remove that.
You have a lot of freedom to be a more loving dom or more of an asshole, yet being an asshole has a lot of consequences as the girls will dislike you and refuse you.
The main character is very much dominant with the girls, as this is a "trainer" game, so if you are more into switch or sub relationships, this probably wouldn't be your thing.
I very much love that Rogue from the Evolution animation and that design of Emma Frost and X-23, and a young Psyloche (Elizabeth),... and Wanda...
Anyway, the girls design is seriously S-tier.
Out of all the girls currently in the game, only 1 of them I didn't really like and she was a more recent addition, which I'm sure several people will like her body type more and the game still gives me an option to remove her which, in lore, is just Xavier sending her on errands around.
All in all, this is a very well deserving 5 out of 5.
The sex is basically Live2D technology without using Live2D technology.
From what I know, the dev created it 100% from the ground up before Live2D was a thing for Ren'Py which means the dev doesn't only have great taste and is an amazing writer, but is an unbelievable genious of a programmer as well.
This is that one game that if and when I'm more well off in my life, I'll definitely subscribe to their Patreon just because its fully deserved.