The hitsound volume in the beginning is too quiet. Also the hitsounding in the beginning is pretty lacking. I'd put more (default) soft whistles to give feedback on the vocals.
In regards to HS volume, generally speaking? My diff is 20% for the intro, Bill's is 40%, and Hari's is 60%.
I made the swing section 50% for [Truth] and added whistles. If it's solid then I'll copy the hitsounding over to the other diffs and upload
Add rsi and gyze to the tags since the song is from them so it makes sense to have their name searchable in the tags
Your timing isn't consistant in hari's and the truth difficulty has different timing than flan's and bills https://puu.sh/BFWkb/5c9176aff4.png https://puu.sh/BFWkl/2f8c4248b5.png so I suggest changing the timing back -4 so then all the difficulties start on the same point and it's also unrankable https://puu.sh/BFWnu/02748e2b83.png
Delete drum-slidertick.wav and drum-slidertick2.wav as they arn't used anymore as they are a part of the old hitsounds, and drum-slidetick2.wav is unused anyway which is unrankable https://puu.sh/BFWqG/64fcd18990.png
Your mp3 is 320 kbs which is over the rankable limit try using https://puu.sh/BFqTP/cfb27d21df.mp3
I think you meant to put this on the timeline instead of General (All Difficulties) lol I will take a look later