00:04:018 (4) I suggest that you turn this into don to emphasize more the following kat, which represents the melody, and also turning this 00:04:732 (8) into kat for the same reason
00:18:447 (40,41,42,43) - why is this 1/3? It doesn't follow anything and it's the only time you use 1/3 throughout the whole map. I'd suggest you delete 00:18:637 (41,42), put a k at 00:18:732 and make 00:18:161 (39) - a d (plays better imo but optional)
00:21:304 (53,54,55,56,57,58) - I think it would be better if you put it one 1/2 tick after as it would follow the song more accurately imo. If you do that, you could also move 00:22:447 (59) - 00:22:447 (59) and delete 00:22:875 (61) - to make this whole bar less straining
I don't think this works 00:26:161 (77,78,79,80). I would just do a quintuplet from here 00:26:161 to here 00:26:732, maybe kdkkd, so that the dons can represent the bass well.
Same here 00:35:304 (121,122,123,124), in this case dkddk would fit better (for the same reason as kdkkd before)
00:27:590 (85) Turn into kat to follow the snare properly? If you do, turn this 00:28:161 (89) into don to make the pattern better
maybe move 00:36:018 (125) - to 00:35:875 to follow the kick??? It doesn't follow anything rn
00:43:018 (160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176) - is too long to be in an oni. I'd suggest you remove 00:44:018 (167) -