Overall issues with the top diff's inconsistencies and lots of suggestions.
Also some issues with unclear repeat arrow on the Insane, and (subjectively) poor hitsounding choice for the map's intro by putting whistles on every single note.
Vocals are extremely off in many places, and because the mapper seems to be following these vocals really closely with rhythm choices, more complex timing is necessary. Also some other off-timed stuff here and there.
https://osu.ppy.sh/beatmapsets/818008/ Missing (TV Size) tag in the title, along with maybe having room for some more tags. Kantan and Futsuu having fast SV usage is probably incorrect too
EDIT: my bad, saw a post saying it shouldn't have it and the mapper saying he deleted it, so I didn't notice it was in the title x_x but my point about Kantan and Futsuu being too fast remains so..
Difficulty naming might be an issue. There's an "Irohas' Extra" and "Lasse's Extra" but there is a difficulty in between named Expert, which is usually considered slightly easier than Extra. Furthermore, Expert has a higher OD than both Extras.
various suggestions, irotuk diff has a ridiculously unfitting hitnormal. also arguably spread issue between hard insane and advanced but i didnt feel like going into that