Playfield usage could be much improved across all diffs, right now everything is quite centered and you're avoiding the edges/corners. This makes the map feel constrained and it limits a lot of what you can do with your patterns/movements and the map as a whole. Try not to shy away from the edges as much and it'll feel a lot better.
The hitsounding feels pretty lacking since the hitwhistle is a drum kick. Usually you will use drum-hitnormal for the kick so that whistles can be used for vocals/melody. Right now you're using finishes for vocal/melody and it sounds very bad and spammy for players without custom hitsounds enabled, so changing around your samples a bit would make your hitsounding much better overall.
Unused files.
"scorebar-colour-9.png"
"scorebar-colour-8.png"
"scorebar-colour-7.png"
"scorebar-colour-6.png"
"scorebar-colour-59.png"
"scorebar-colour-58.png"
"scorebar-colour-57.png"
"scorebar-colour-56.png"
"scorebar-colour-55.png"
"scorebar-colour-54.png"
"scorebar-colour-53.png"
"scorebar-colour-52.png"
"scorebar-colour-51.png"
"scorebar-colour-50.png"
"scorebar-colour-5.png"
"scorebar-colour-49.png"
"scorebar-colour-48.png"
"scorebar-colour-47.png"
"scorebar-colour-46.png"
"scorebar-colour-45.png"
"scorebar-colour-44.png"
"scorebar-colour-43.png"
"scorebar-colour-42.png"
"scorebar-colour-41.png"
"scorebar-colour-40.png"
"scorebar-colour-4.png"
"scorebar-colour-39.png"
"scorebar-colour-38.png"
"scorebar-colour-37.png"
"scorebar-colour-36.png"
"scorebar-colour-35.png"
"scorebar-colour-34.png"
"scorebar-colour-33.png"
"scorebar-colour-32.png"
"scorebar-colour-31.png"
"scorebar-colour-30.png"
"scorebar-colour-3.png"
"scorebar-colour-29.png"
"scorebar-colour-28.png"
"scorebar-colour-27.png"
"scorebar-colour-26.png"
"scorebar-colour-25.png"
"scorebar-colour-24.png"
"scorebar-colour-23.png"
"scorebar-colour-22.png"
"scorebar-colour-21.png"
"scorebar-colour-20.png"
"scorebar-colour-2.png"
"scorebar-colour-19.png"
"scorebar-colour-18.png"
"scorebar-colour-17.png"
"scorebar-colour-16.png"
"scorebar-colour-15.png"
"scorebar-colour-14.png"
"scorebar-colour-13.png"
"scorebar-colour-12.png"
"scorebar-colour-11.png"
"scorebar-colour-10.png"
"scorebar-colour-1.png"
"scorebar-colour-0.png"
"comboburst-3.png"
"comboburst-2.png"
"comboburst-1.png"
"comboburst-0.png"
You have a bunch of unused files, delete all: https://i.imgur.com/qZ0hydH.png, https://i.imgur.com/pfdVln8.png, https://i.imgur.com/dAafjeT.png, https://i.imgur.com/d5BoCwy.png
i have already used "mapset verifier", this elements are already used (scorebar-colour is animated)
https://imgur.com/a/hguAWnx
there are PLENTY of unused files, just search "scorebar-colour" in the beatmap folder and delete all the files that show if you plan on not using them.
You need to add 'anime' (proper genre) 'jpop' and 'pop' (derivatives of 'j-pop') to the tags of the map btw
You are using an active hitsound at least in your mania difficulties, that's in .mp3 format (soft-hitfinish5.mp3), which isn't permitted by the Ranking Criteria, as it states that: 'Active hitsounds must use the .wav or .ogg file formats. .mp3 files have slight delays, and therefore are reserved only for longer passive hitsounds, such as ambient noises.' Again, you're using this hitsound as an active one, for example at 00:12:097 (doesn't matter the difficulty as it's been used at the same spot in all diffs). So you need to convert this hitsound into a .wav or .ogg or get another hitsound in those formats to replace it.
This was a very well made beatmap, I really enjoyed playing the normal difficulty on it. I really hope for more 3-4 star difficulties to be added!