The demo is an excellent introduction to Bloody Chronicles. I like it very much. I do agree that the story does attempt to cram too much information at first, but I rather have a good understanding of where the story will be heading off to right away, then have a typical slow build-up of the story.
1st person narratives are always the best solution in telling a story or presenting main character's motives/personality traits. An setback with 1st person narrative is that doing so can lead to seeing how the main character perceives the other characters. That alone can bring a narrow perception and understanding of the other characters and just how important their own movies/reasoning/etc. plays a key role in the development and grown of the MC. I personally find 3rd person narratives much more useful and less restrictive.
As for the voice-acting; strangely enough, my thoughts are opposite of Diamon's. I happen to think that Aki's and Akito's voice actors are the stronger points here. And I don't understand what is it about some individuals automatically attacking characters with cute voices as grating and "too cute". Aki's VA sounds natural in her deliveries and I don't find her trying hard on the cute here. In fact, it fits the character perfectly. Akito's VA sounds great and has some really nice deliveries, but there are times I feel like he put too much emphasis/stress on getting the point across that certain lines sound odd to me. Not to mention, his mic qualities seems to be the lowest of the entire voice crew, which some lines sounding as if his voice is going in and then out. I am listening with headphones, so that is what it sounds like to me. Suzumi and Kaoru's VA is good, though I have to agree a bit with Diamon that she sounds like she is reading rather than acting sometimes. Overall, I still really like the voice-acting here.
The GUI, art, etc. are all superb. Your team just needs to touch up a bit on the script and fix some grammar issues. Great work and I look forward to more of the game.