I keep a spreadsheet for this stuff, a real one in Google Sheets, tracking which VNs actually let you see everything without some bullshit invisible flag system. Lustful Years is in the "almost perfect" column, which is more than I can say for most. The female protagonist here, she's got this whole life unfolding and you're steering her through a mess of guys and situations. The oral scenes, my god. There's one particular blowjob moment with a guy who's name I won't spoil, but the way they animated her hesitation before she goes for it, that tiny pixel shiver, that's the kind of detail that makes me reload a save five times just to see if the dialogue branches.
The vaginal content is equally explicit, no fade to black nonsense. You get the full view, the awkward angles, the weird wet sounds they somehow convey through text descriptions that are way more effective than they have any right to be. I'm talking about the sound effects being described, not actual audio, because there isn't any. That's a thing I wish they'd add. Just some basic squelching. Is that too much to ask? Probably. The developer seems to be one person in a basement somewhere in Eastern Europe based on the translation quirks. "He put his thing in my womanly place" is an actual line. I laughed. Then I kept playing because the scene was hot despite the goofy phrasing.
The difficult choices the description mentions are mostly about which guy to pursue, and some of them lock you out of others permanently. I hate that. I want a harem route. I want to collect all the scenes in one playthrough without the game judging me. But the branching is what makes the erotic parts hit harder, I guess. When you finally get to the hotel room with the shy bookstore owner after rejecting the confident bartender three times, it feels earned. The female protagonist's inner monologue during sex is what I'm here for, that mix of dirty thoughts and emotional vulnerability. Most adult VNs forget the second part. This one remembers, sometimes too much. I clicked through a whole paragraph about her feelings on interior design once, mid-coitus. Priorities, lady.