Just Believe!!!

557,545.454545454546,4,2,1,20,1,0
6557,600,4,2,1,20,1,0
7157,500,4,2,1,20,1,0
7657,545.454545454546,4,2,1,50,1,0
11475,600.000000000001,4,2,1,50,1,0
12075,500.000000000001,4,2,1,50,1,0
12575,533.333333333333,4,2,1,50,1,0
13641,600.000000000001,4,2,1,50,1,0
14241,500.000000000001,4,2,1,50,1,0
14741,544.959128065395,4,2,1,50,1,0
21280,322.58064516129,4,2,1,70,1,0

ur offset was super off so i fixed it, also changed some other stuff but yeah

60% volume from 00:06:539 to 00:16:915 is a bit too much, can be lowered to 40% since there's not a base to make it 60 compared to 00:57:395

remove manual (blue) breaks?

normal: 00:25:136 - 01:47:717 - 03:16:830 -
hard: 03:10:298 -
insane, extra: 01:47:717 -
top diff: 03:13:685 -

not a problem but i think its not on purpose

01:37:717 - このfinish hsいらないかも？

01:43:362 (1,2,3,4,5,6,7) - Can you like use other patterns other than this? not gonna lie feels weird imo

from 00:02:720 - to 00:16:902 - I guess need bpm change (new red line) to follow the sound correctly
00:07:084 - 00:11:993 - 00:15:266 - etc are off from the song imo

need more opinion but here is my opinion of redline (add this)
6539,600.000000000001,4,2,1,20,1,0
7139,500.000000000001,4,2,1,20,1,0
7639,545.454545454546,4,2,1,20,1,0
11457,600.000000000001,4,2,1,20,1,0
12057,500.000000000001,4,2,1,20,1,0
12557,359.281437125748,3,2,1,20,1,0
13634,600.000000000001,4,2,1,20,1,0
14234,500.000000000001,4,2,1,20,1,0
14734,545.454545454547,4,2,1,20,1,0
16915,540.540540540542,4,2,1,20,1,0

01:07:233 - 02:14:330 -

remove claps on vocals, whistle only sounds better

00:16:915 - use same snapping for spinner start on all diffs

00:16:902 - could add circle on all diffs for the "woosh" sound

since you already have to click to start spinning it doesnt actually change gameplay much but it makes the spinner feel more impactful imo

01:35:136 - Hard/Insane/Extra/Extreme/Top - i believe the slider should be mapped from here and not before for the sake of vocals - this is one of the rhythms i came up with, but you can figure out different rhythms for the different difficulties to be more clickable heavy and such https://prnt.sc/8ZShJwNEbm63

HS :
General
00:51:588 - could add sampleset-normal at this tick for diffs that mapping here

Top diff
00:15:084 - 00:11:811 - 00:12:720 - 00:14:539 - 00:15:084 - 00:22:556 - 00:23:846 - missing soft whistle on this diff
00:39:975 - missing HS on this diff
01:56:427 (4,5,6,7) - 01:56:749 - 01:59:007 (1,2,3,4) - 01:59:330 - 02:01:588 (1,2,3,4) - 02:01:911 - etc. can also add soft claps foe these 5 hit streams for emphasizing the overmap?
00:57:717 - 01:00:298 - 01:02:878 - 02:04:814 - 02:07:395 - 02:09:975 - i can understand you wanted to miss hs at these ticks for emphasizing the rhythms you did, but i still suggest adding sampleset-normal and soft whistles coz currently sounds a bit empty
02:16:265 - 02:42:072 - can also add soft whistle as hihat
01:15:298 (2,3) - 01:30:862 (3) - etc. could add soft whistles for these triples where in kiai section to get better click feedback
03:07:072 - could also add a sampleset-drum and soft whistle to get feedback since its a whitle tick like you did at 03:08:362 (1) - ?

Extra
00:23:846 - missing soft whistle on this diff
00:57:717 - 01:00:298 - 01:02:878 - 02:04:814 - 02:07:395 - 02:09:975 - could add sampleset-normal and soft whistles same as above i mentioned
01:15:298 (5,6) - 01:38:604 (2) - 02:22:395 (5,6) - etc.could add soft whistles for these triples where in kiai to get better click feedback
01:51:265 (1,2,3,4) - can add soft whistle for these streams on this diff to get better feedback
02:16:265 - 02:42:072 - missing soft whistle

Insane
00:10:175 - 00:15:084 - missing soft whistle on this diff
00:57:717 - 01:02:878 - 02:04:814 - 02:09:975 - sampleset-normal and soft whistles same as above i mentioned
01:15:298 (1,2) - 02:22:395 (1,2) - etc. could add soft whistles for these triples in kiai same as above i said
02:16:265 - 02:42:072 - missing soft whistle
03:07:072 - could also add a sampleset-normal and soft whistle at this whitle tick for feedback

Hard
02:16:265 - 02:42:072 - missing soft whistle
03:07:072 - missing sampleset-normal and soft whistle

Normal
00:02:720 - can add soft whistle on this diff
01:02:395 - 02:42:072 - 02:16:265 - missing soft whistle on this diff
01:58:685 (5) - 02:32:233 - 03:26:427 - missing sampleset-normal and addition-soft on this diff

add kiai?

highly recommend to add some tags:

ニジガク nijigaku 3rd album video game Ayaka Miyake ygarshy PASSiON KiNG

02:58:201 - it wouldnt matter if 02:58:282 - was a note or whatever objects here, it could continue naturally, but except top diff, there are no objects here. so it would be better to set 02:58:201 - to sampleset-normal instead of adding clap imo

what about muting 01:48:927 - cuz 70% soft sampleset is kinda annoying to listen imo

00:07:084 - finish?

the spread between Extra and Top is somewhat unstable.

there is nothing particularly noticeable about the actual distance used but it is easy to notice that the parts where jumps are abused are overdone at the top: 01:21:911 (1,2,1,2,1,2,1,2) - , 01:32:233 (1,2,1,2) - and 02:12:233 (1,2,1,2,1,2,1,2) - (its some example about)

even 01:41:265 - is expressed only as a 1/2 slider in Extra. to be honest, the usage of rhythm may be similar but you can see that the intensity with which it is expressed is polar opposite (see top diffs 01:41:265 (1,2,1,2,1,2) - and extra's 01:41:265 (3,1,1) - )

therefore, reducing them to make it better spread gap between extra and top or make another one for making bridge to them is best way to solve it imo

メタデータ
https://www.lovelive-anime.jp/nijigasaki/cd.php#ova03
https://www.lantis.jp/release-item/LACA-15840.html

全体的にNC多いしHPをHardから上は1ずつくらい上げても良さげ

topとInsane以外の難易度で、01:47:717 - に、Insaneのように休憩終了地点を設定しよう
もしくは、Insaneを未設定にする