This VN-type game has an incredibly fascinating atmosphere! Byakuren's story in Makai seems to be a rarely explored concept, so it's very interesting to see how it's visualized this way.
The gameplay bits proper are simple and do what they need to, despite the currently awkward dodging minigame. The biggest issue is the extremely low default sensitivity of the mouse, but the Q and E buttons make up for it.
The visuals are presented excellently! The 3D models do what they need to and they do it well - as do the dialogue boxes and well-fitting music. You've found a really good formula with these!
My favorite part of the visuals is the cute portraits and character art. （＾∇＾）
The writing brings everything together as well. Every character has a lot of personally and is integrated well into a good image of what Makai is like over time. Overall, I can tell that a lot of care is being put into the story.
The jam's theme is also implemented amazingly into the writing. Yumeko's part was of particular interest to me because it explores what seems to be a less common facet of the theme in a very natural way - especially when juxtaposed with others in the story.
In any case, this is an excellent read so far, with numerous choices to go through! I'm looking forward to seeing how this develops!