it says the game was taken down for sexulizing minors, wasn't the protagonist over 18?

True, but literally they just have a bot which just detects nsfw content from the original thumbnail. But the only thing I don't get is, the faq said it was only for real people, animated and fictional was fine. -_-

https://itch.io/takedowns/465888

Is there a way for the game to get re-instated? Is it in the works?

The problem isn't because of any minors in this game. As far as I know everyone is 18 or older. The problem is that the game is based on "Incest or pseudo-incest content" it's the same reason steam had to delete a ton of games recently. The payment companies are cracking down on this specific type of content.