Obligatory Hitsound Mod:
01:22:044 and 01:31:840 - Missing Normal additions on Normal and Hard, the latter also missing a finish on Hard.
00:54:289 - 00:54:391 - 03:03:574 - Missing clap for snare on hard and top diff
03:26:636 - Missing finish for cymbal crash on all diffs
Imo would also be cool to add a hitsound sample for the few toms in the song at 02:35:989, 02:36:057, 03:31:534, 03:32:146, 03:54:799 and 03:55:411.
Your current MP3 is labeled higher quality than it actually is, being of 128kbps quality and over encoded as 192kbps. And as it seems to originate from a YouTube Rip, it could be improved.
Here is a higher quality file, which will require offset to be moved by -8ms: https://juicythighs.s-ul.eu/Pxaj6tfl
Should add ‘managoru J Pop Jpop 幾田りら ikuta rira lilas ayase’ to tags for GDer, genre and vocalist.
03:33:064 - Could buff this part on Hard and Insane to 60% vol to match with Normal as the song doesn’t completely die out to warrant the drop to 20% here.
Your current soft-hitclap sample is pretty quiet and blends into the song at most volumes, here’s a louder version of the same sample to replace it with instead -> https://juicythighs.s-ul.eu/gK8rmtU6
Also, I would suggest the addition of silent sliderslide as the song is slow so default sliderslide can be a bit obnoxious -> https://up.ppy.sh/files/blank.wav