Sen no Yukari

00:20:804 (3,4,5,6,7) - (7) is on a stronger sound, but is very close to the prior note and at an uncomfortable angle. Changing the direction of the square would it a nice angle and much needed emphasis.

00:44:065 (5,6) - Vocals are a lot stronger compared to the piano, and having two circles makes the pattern too similar to 00:41:890 (3,4,5,6) - which was over a much stronger piano. Replacing with a slider would be much better.

01:00:674 (7) - Check snap

01:04:717 (6,7) - Hard to read with (6) underneath another note, and there's uncomfortable flow/spacing to (7); which is on a strong sound. I'd reorganize this pattern a bit to make it more comfy.

01:21:347 (2,3) - spacing here is a bit more challenging compared to similar part in this section, such as 01:17:869 (2,3) - and 01:19:608 (2,3) -. The music's intensity remains consistent, but this part feels a bit too difficult, which can cause discomfort during gameplay.

How about making it less spacing to maintain consistency?

01:26:326 (3) - Even if it's intended there is a big sound compare to 03:03:718 - here. Therefore I don't think 25% volume is not good enough although you focused drum sounds.

01:29:499 (2) - Looks too similar to the slider right before it, so it's hard to predict the SV. I'd use a more complex shape here, such as a wave.

01:32:325 (5,6) - I felt that the current placement here makes a bit of awkward in movement.

Changing it like this:

might allow for a more natural flow imo :)

01:35:804 (5,6,7,8) - imo rhythm could be changed a bit here, since the vocal 01:35:804 (5) - is a bit later.

Smthing like https://i.imgur.com/UI9VcCR.png might work better so it represents the extended vocal @ 01:35:804 (5) -

However considering the 2nd chorus has the vocal not extended 03:13:195 (5,6) - might wanna keep for consistency

01:46:021 (2,3,4) - 01:47:760 (1,2,3) - 01:51:347 (2,3) - 01:52:978 (2,3,4) - Think the spacing for these 1/4 should get nerfed since at the moment it is similar spacing as in the kiais while the song is less intense here.

Adjusting the spacing for these instances makes this section contrast with the chorus better.

01:58:412 (1,2,3) - the rhythm choice here does seem a bit weird.

If you want to follow the piano melody, a 1/2 slider + 2 circles might match better.

On the other hand, if you want to follow the drums, something like:

might be more appropriate.

02:14:391 (7,8) - could do something like https://i.imgur.com/MLTcTKP.png for this and 02:16:130 (6,7) - 02:17:869 (6,7) - etc.

This makes the 02:14:391 (7) - which is higher pitch stand out a bit more and also helps break the otherwise quite monotone spacing.

03:02:325 (3,4,5,6) - The flow here uses uncomfortable angles - whereas a similar part of the music; 02:54:934 (1,2,3,4,5,6,7) - uses crisp sharp angles. I'd sharpen these up so they're comfortable and consistent.

03:23:630 (4,6) - these two slider ends are not stacked correctly

03:37:326 (3) - 03:40:804 (3) - 03:44:283 (3,4) - 03:47:760 (3) - I recommend switching up the slider shape for the longer buzz sliders so the difference is also indicated visually.

03:38:847 (1) - vs. 03:42:325 (4) - would nc both or unnc both for consistency

03:46:326 - volume 30% would be better as you know you make the volume 10 to 25 at the calm buzz sliders part.

04:31:456 (6) - How about extending this slider until 04:32:108 - ? The vocals stop at 04:32:108, and since you've been following the vocals in this section, this change would make more sense.

04:57:543 (1) - Since the the second repeat is on a much stronger sound, it doesn't represent the music that well. I think something more interesting could be done here, rather than a simple (and potentially tricky) repeat slider.