02:30:591 - place here new timing point, same bpm, but time signature is 3/4 (waltz)
you need to use 3/4 time signature because with this timing point, rhythm here sounds better than 4/4 + fits better.
btw add timing point at 02:34:227 with 4/4 time signature to return to the same rhythm whats basically uses in song
I am aware of Natsu's ranked beatmap for this song, however, the metadata for this song should probably follow what is listed on Mitchie M's own website
https://mitchie-m.com/discography/
Title: ニュース39 feat. 初音ミク
Title (Romanized): News 39 feat. Hatsune Miku
Uninherited timing points conflict with MUZUKASHII diff https://imgur.com/yrMgL2N
there are 1/1 sliders on every difficulties (expect kantan), which is unnecessary and looks bad for maps. i recommend to remove them.
regarding sv, i do feel 1.4x for the entire map is a bit too fast
what you could do is have most of the map as 1.1x, make the kiais 1.2x, and the slower sections (i.e. 00:08:773 00:26:955) have 1.0x
gradual sv increases (i.e. between 00:11:500 to 00:12:409 and 00:39:682 to 00:41:500) can help transition between different sv much smoother, tools such as Manage Beatmap can help you do this