Note: Many of my comments are written post-jam, reflecting what I saw during voting. Pardon the slow follow-up! ^.^;
Even though I only got through the first week during the voting period, I enjoyed a lot of what I saw here! The 3D platforming controls and mechanics are generally very intuitive.
I did notice that I occasionally (but rarely) snagged on random walls and floor sections. (Technically-ish speaking, I presume that Reisen didn't get any leniency set on how much she could "step" up tiny elevations.) Another, more severe, gameplay issue was that the game for some reason bugged out and crashed on stage 4, then booted me to a Week 2 without letting me go back to Week 1 to identify the cause... or see the scene. /o\
Otherwise, there is some good QoL implemented, as well as excellent overall polish! I can see that you built well on your formula from Amanojaku Scales. The level design is fun, and it's a good challenge to speedrun - and accessible to casual play.
The cute 3D style is also very promising, with smooth animations and textures. I enjoyed the song that was playing, and the short story sets the scene and runs with a fun scenario.Overall, it's a very competent game, quite unique, and fun to play! I'm definitely planning on playing through the rest when I can. Well done on this!