Don't download, there is no content on the ichio version.
If you wanna see some NSFW, you need to purchase the $16 version on their Patreon.
Viewing post in [Demo] Titans Tower (Teen Titans Fan Game) comments
https://sexyversegames.gumroad.com/
Actually you can get the full game for $5 on Gumroad. It's not available on Patreon. As the title states, this is only the demo for those that want to see what the game is like before purchasing.