I want to like this game. I really do. I mean, I do like it, I just wish I liked it more. Its got a lot going for it, and for what it is, I'd give it a 4/5. It does, however, possess a single glaring flaw that I must lower that to a 3/5, for purely personal reasons.
First off, the gameplay. Its fine. Completely unremarkable. Its not bad, of course. But its not really anything excellent either. No rpg battles, just a collection of small maps to go on scavenger hunts through for items to unlock scenes and the characters to use said items on. Its perfectly serviceable, maps are nicely sized, it just doesn't wow me.
The writing of the game is fine. Good, even. Nothing stellar, but again, completely serviceable. If it aint broke, don't fix it. As far as futanari and corruption go, both of which there are a great many things tagged as such and precious few of which are truly good. Especially at the same time. So while its not amazing, it doesn't have to be to beat out the mass of its competitors. So while, again, we aren't working with anything particularly stellar or original here, the writing is well done and hot, so its an absolute win if you ask me.
Besides the writing, the models that are actually being used and animated are excellent. Certainly the best thing the game has going for it, by far. Sex scenes are all animated, and they look better then the VAST majority of similar projects. Like, really, if this game does anything right, its this. I don't even prefer animations in my rpgm games, and am not fond of 3D models, but this one does it so far above its peers, Its worth pointing out.
But now, alas, my gripe. Its twofold, and it stems from the same issue. Why use existing characters? For one, it creates a serious sense of dissonance drawing from such disparate artstyles (particularly that of Akira Toriyama, who's character design I have always had a particular dislike of), and it just really bothers me. And on top of that, the setting is completely separate from any of the character's origins, and though their behavior vaguely resembles their source, there is absolutely no reason for them to just not be original characters. I could understand if you wanted them on the side as references to things that the author enjoyed (I think Nemona is a good implementation of this), but I feel that the game genuinely suffers from using existing characters over original ones.
I'm still going to keep a close eye on this project, I enjoy what I've seen so far. It just, to me, won't live up to its true potential without some changes, which I don't see ever being made.