Played the demo and not too bad of a set-up for a game like this. This reminds me of the X-Change visual novel series, minus the adult stuff. Actually I love that most likely it will not have that stuff, but wish there would be more visual novel games like this. This would be a good baseline for those kind of games.
Do see quite a few spelling errors in the game. One I thought was one, until I saw the background and that is how the name suppose to be spelled.
Not a very deep game based on the characters, story, etc. Maybe it gets a little deeper later based on choices or something, or maybe new to this, hint: being a baseline for these type of Visual Novel/games.
Kind of disappointed that the demo ended before we got into more into the aftermath of Yuki's gender transformation. Then again, this could be a pretty short game, even with the different choices and hopefully different ending
I hope you put a Gallery/Extras in the main menu for artwork, scenes, music, etc.
One last thing of the game. The title seems possibly a little to generic and misleading. Then I read it, it seems like Yuki would switch to some other character's or person's body, but this is a Gender Change and the title may need to reflect that and something more to get more people interested in checking out this demo/game.
Its sad it does not seem many are interested in this nor commenting on this game. Maybe my critic might help a little. Also I am thinking of sharing this game on Facebook, maybe other places to let more people be aware of this game and try it out and maybe leave comments. Maybe you can try to do the same, maybe if you are lucky, you can share a (fixed) demo on Steam, or make a Kickstarter, or something.
That's all I can suggest. Good luck on this game.