Okay so- first impressions are a bit negative to be honest. Whilst the artistic presentation and quality is top notch, and the music is excellent; the writing and voice direction is where this build falls incredibly hard.
Aside from the voice acting (as they're directed it seems) being all over the place and off-putting, the dialogue they're saying is unnatural and pulls the reader right out of the story. The writing itself is way too repetitive to get into it authentically (the over-use of "virtue" is especially irritating), and the characters feel akin to dolls that say their lines without having an inner-world.
I was only able to get to the presentation of the school's historian program before I couldn't read/listen any further. Because I didn't believe it would get any better; if this was the writing quality so far then that was as good as it was gonna get. The opening with the history of "Wander" was not a good foot to start on, but this was revealed to be 'the villain's'/Director's words, maybe it would be better if we actually got the MC's perspective (not a fan of MC being his actual initial's btw). But the quality didn't improve, and you can only appreciate the character art and music for so long before you just have to drop what you're absorbing.
ESPECIALLY when the writing has no substance to it.
Overall; I was excited for Spark Hearts, and was incredibly disappointed. But if anything I hope that with all the effort going into this project that the most important thing about a Visual Novel, the writing, can be improved to reflect the rest of the project!