Great game. Shitty porn.
The hentai aspect is... very lacking. Not many scenes in the first place, and it's mostly all defeat rape, and not even the "happy rape" trope. It's always really depressing defeat rape full of trauma, remorse, and crying. But paradoxically, it's not even really hardcore. It's like the text and context is "sad rape," but it feels vanilla. I don't know how they managed that. Maybe it's just me, but I read one scene at the start and decided I don't care for any of these scenes if this is the vibe of the first one.
That said, the defeat scenes are tied quite well to the actual gameplay. You can do rescue missions with the other girl and it's all quite immersive, in a sense.
The gameplay is very well balanced, unique, and fun. Although I stopped playing midway because I don't have time to play a porn game for just good gameplay these days, the writing, story, and characters were all quite well done.
I'd say this one isn't for the usual female protagonist RPGM enjoyers that are just looking to get the heroine corrupted and shit. It's rather unrewarding on that front. Instead, if you actually want to play it to win, doing your best to get the heroine to succeed, you might not get many scenes, but you could have fun.