This was actually an amazing experience. Even if it was only an hour with a bit, it was just fun. As a huge Yuuka fan, and a big fan of souls games, I hope the finished version one day sees the daylight, or rather, sunlight.
I support the opinion that tutorial was missing those things, which previous comment stated, by the way, had exact same issues at the start. Also unsure how the hitbox works, looks like it's the same as in touhou games, but I didn't notice the game displaying it somewhere.
I also got to what I believe to be an unfinished area, after clearing the bosses twice, and Doremy told me to take another portal, which teleported me into nowhere with no way to move.
Anyways, best of luck to you and all of us!