If you read the bio of this game you will find the question about this game becoming a series with an uncertain answer.

After some time thinking about it and rewriting the story of this game I can give you a final reply

Yes this game is going to be a series! I've written a story for at least 3 chapters

The reason is basically that I'm making this game mainly to start my experience as a game developer, that's not related with the game's success