I want to contact the developers, I am studying english and I would like to make a spanish translation of this if possible (spanish is my native language) since I really loved it and it would be great if more people can have access to it :)
We're honoured to hear that you enjoyed Halloween Otome enough to want to translate it. We're fully behind bringing Halloween Otome to more people and, as such, you have our permission to do so.
As you've created an account on the Synokoria Forums it may be easier to discuss this further there.