Myosotis (Remixed By Yamato Kasai From Mili)

00:21:819 (21819|3) - can be deleted like you mapped 1/4 00:23:131 (23131|5,23225|4,23319|2,23319|0) - here. currently the pattern is too dense for the left hand for Hyper diff also compared to the other parts of the beatmap.

00:23:319 (23319|0,24069|0) - the inverse is not needed here. it doesnt fit the intensity + little jarring for hyper diff player to cope with this during the long time LN part.
So for 00:24:069 you can try doing this? I think it's cool

00:29:131 (29131|6,29225|5,29319|6) - Ring to middle finger minitrill is a little bit harder to hit than most OH minitrill combos, would suggest trying to move it to index + middle in col 5 and 6 respectively.

00:39:819 (39819|2,39819|5) - one of them is supposed be split into 2 1/2 LNs for the vocal?

00:46:569 (46569|0) - double

00:55:194 (55194|1,55194|5,55194|4) - you could probably lighten this down to a double, since it is lighter on emphasis than the triple notes 00:54:444 (54444|4,54444|2,54444|5,54631|4,54631|3,54631|1,54819|2,54819|3,54819|0) -

01:00:069 (60069|2,60069|0,60069|4,60069|6) - honestly I do think this is a bit excessive for a quad considering that during this entire section you don't have another quad present. i'd personally remove one of the two LNs here to compensate 01:00:069 (60069|4,60069|6) -

01:03:819 (63819|6,63819|2) - should be triple to be consistent with 00:57:819 (57819|1,57819|0,57819|6,63819|6,63819|2) -

01:05:319 (65319|3,65319|2,65319|6) - should be double to be consistent with 00:59:319 (59319|2,59319|6) -

01:06:819 (66819|3,66819|6,66819|2,67194|4,67569|2,67569|5,67569|1,67944|3,68319|4,68319|1,68319|0,68694|2,69069|5,69069|3,69819|6,69819|2,69819|1,70194|5,70569|4,70569|1,70569|0,70944|3,71319|5,71319|2,71319|6,71694|4) - nice

01:15:069 (75069|5,75069|4,75819|4,76794|4,77244|4,77694|4,78069|4) - Is it possible to switch these columns for symmetry? I think it also might be easier to hit the 1/5 as well if it's balanced on both hands the same finger hitting notes rather than index on right and middle on left.

01:15:819 (75819|6) - better to just end this LN at 01:17:998 'cause currently this is adding burdens for hyper diff player to release later after a stream consists of 1/12 1/16 1/5 + col 1 3 5 7 finger locking

01:53:694 should be a double here since there's another piano syllable actually made the intensity more siginificant here compared to 01:53:319 (113319|0,113506|1) - :

02:10:569 (130569|0,130569|4,131319|6,133569|0,133569|4,133569|6) - ahh.. no i disagree your pattern here. first actually the 02:10:569 (130569|4,130569|0,131319|6) - was not ended and initiated again 02:13:569 here. The sound is still there. But i guess you wanna express that sense of re-start
So you can try this i think?