Basically, if you want to see a kinda cute girl get fucked by an ugly bastard (or a silhouette, or a ghost) in some relatively vanilla scenes, then this isn't bad. However, there's no real game attached - the fighting is basic and there's no apparent reward for "winning". I don't think anything here is bad (opinions on ugly bastards aside) but there's nothing standout here either, even if just judged as a glorified clip player.
There's really not much gameplay to talk about. If playing to "win," you have to whittle down the UB's health so you can escape. The dude is a tank and/or the girl is a weakling, in this regard. You also only really have the basic punch available. You're not supposed to try and win, and even if you want to try, it's not fun trying. The mechanics are basically just there to provide some backdrop to the grapple mechanics and eventual loss to the UB. The grapples are fairly similar to what you'd expect to most sex games that have a mid-fight grapple mechanic - the dude can feel her up or partially strip her, and you can either let the game decide automatically, or make the decision yourself, which is a nice touch. There's also a variation where she can be knocked over if crouching, and potentially fucked without going through the "full" loss condition (i.e. getting forced into the corner with high lust and no energy).
I find the art to be fairly decent. It's not the most detailed or unique, but it's fairly clean and I've not seen any real problems with it. Most individual clothing items can be removed, and underwear displaced or removed, but there's no variation I could see beyond choosing if the girl has shorter or longer socks. The animation in the fucking scenes is fairly nice, although unadventurous. Sex positions don't change significantly mid-fuck, nor are the positions anything other than a few fairly normal ones. There's no toy use and barely anything beyond the dude getting off, other than the option to kiss or fondle boob/tweak nipple at times. That said, the movements were fairly clean and well done - no weird jerking or hitches that I noticed. There's a few location changes you can do which open up some slightly different sex options. The voicework is again minimal but fairly good for the scene.
I don't want to be too mean to this, as the game does basically say that this is a glorified scene viewer (and you can just skip to that gallery anyway). However, I do feel like there's a bit of squandered potential here. I'm a big fan of games that make you really feel disempowered if trying to do scenes of this variety, and mechanics and story do go a long way to setting that up. The dev even seems to get this, otherwise I'm not sure they'd have bothered with these mechanics. However, without an overarching story, or some reason to win, I do feel like it doesn't quite hit the right buttons, and does feel a bit hollow.
Bearing that in mind... considering this as just a scene viewer, I think a 3/5 does feel fair. It's competent but far from standout. I think it could easily go up to a 5/5 if it had more content, played heavier on the theming, and maybe had some more dynamism in the fucking - the production values are fairly good, it just needs more. Judging it as a game, I think I'd probably put this at a 2/5. It'd need all the previous improvements to hit something like a 4/5 and some real work on the actual game side.