Maybe I can be unfairly glib when it comes to questions of that nature. It's wholly reasonable not to want to be bummed out by a porn game and there's nothing wrong with making a quick forum post to prevent investing your limited time into something you won't enjoy. I
totally get not wanting to spend 70 hours reading of a slice-of-life story only to find out the bitch dies of cancer at the end and you're now a single dad. I mostly avoided anything with the nakage tag on VNDB for what I suspect is a similar reason as you.
But as an aside, just generally speaking... I dunno. I feel like you get more out of stories when you just roll the dice with them. Sure, often a character biting it is cheap and sours you on the experience, but other times it resonates in a cathartic way.
In my example above, knowing ahead of time just caused me to prejudge an experience. People
love the game I referenced, so much so they made a fucking anime about it, but in a vacuum without any context of course I don't want to be sad. Yet there's been plenty of games where an unexpected development had me blubbering like a baby
and I came away feeling good about it. Maybe I would've enjoyed that one.
Anyway, I'm just rambling here because the subject's close to heart. Provided you're in the right head space for it, I think one of the magical things about fiction is that it allows you to experience negative things in a safe environment. Machete weilding killers, war tragedies, and even having a ho-ass girlfriend.
Funny that's coming up in relation here, because Tarantino homage'd the hell out of Kill Bill. One of the bigger influences in Kill Bill Vol. 1 was another Meiko Kaji movie, Lady Snow Blood. The ending duel with O-Ren kinda mirrors the opening of that movie and it even uses the song
Flower of Carnage (sung by Kaji) for the ending.