What a coincidence, since I myself just started working on Yuukyou Seishunka last night. Anyways, I'm not an expert, but I'll let you know what I think.
The first thing I've noticed is that some of your combos are rather long... And coupled with your current drain rate, I've been unable to make it very far playing it (I have to get better O.o). You get a nice point bonus, as well as a nice HP boost if you can hit an entire combo without missing any beats or getting any 50s... And of course, a longer combo makes it tougher to do this, simply because there's more beats that you could potentially screw up.
So I would recommend going through and double-checking where new combos would be suitable. Definitely, this is an upper-level Hard, above where I am.
For the most part, your timing sounds alright (to my ears), except for a couple of your triplets, doubles, and a couple stray markers here or there which sound a little bit fast or slow once I slow the speed down. They may need a little bit of adjustment. I can't remember which in specific are slow/fast. Sorry! XD
I've noticed your spinners have some notes relatively quick after them, this tends to make them a great deal harder to hit. My biggest thing is 01:20:08 (1) (followed by 02:21:90 (1)), the notes come very fast after this one. I'd probably say to shorten this spinner, take it out, or to remove some of the beats after it, I look at this one and I can just see the potential for disaster here.
One more thing, there's only one break in this map, and it's rather late in the song, at about 1:50... Just with the level of activity in the song, I myself would recommend putting another one in somewhere earlier. Not required, just my thoughts, since I'm sure that if I
could get through all this, my arm would probably feel like it would actually fall off at the 1:50 point.
Aside from this, I love what you've done with this map. You've used your whistles, finishes, and claps (most important, I say, thanks for the lack of abuse!) sparingly, and where you've got them is very nice placement. I myself would love to see more done for this song (easier difficulty, perhaps?).