Thank you! To your question, it's unlikely that we'll be able to implement voice acting for the full game due to the cost involved, sadly. However, if the game does well enough, we would love to use that success to get the voices back in. So, there's always a possibility in future, so we hope!
Partial voice acting is also a thing, if it goes well. Woodsy Studio is a good example of that. They make Otome/VN-hybrid games, with the emphasis on being VNs in the first place.