I feel like necro-posting here...
[General]Offset seems a bit early but not by more than 4-9ms. Maybe leave it as is.
[Normal]Somehow I like this map. Very "dynamic" for a < 3 stars map and a bit nostalgic in terms of setup and symmetry. Most issues I found are styling related. Overlaps that look terrible and don't seem to be necessary...especially for the easiest diff in the set. AR+1 fixes some of the late overlaps and it seems this map was created with a higher AR in the first place. Maybe try AR+1 and if you think it still keeps the difficulty low enough you might as well change it.
00:26:463 (3,4,1) - avoid this overlapping if possible, maybe try moving (4) to 432/152 and then flip V (1) and re-place it as a blanket for 00:29:130 (2):
http://osu.ppy.sh/ss/45540900:29:130 (2) - whatever you come up with I recommend removing one repeat here to fit the melody follow. You'll probably have to adjust the following slider pattern.
00:33:130 (1) - flip V and spread it a bit more to avoid overlap and end it on the start of 00:31:797 (2)
http://osu.ppy.sh/ss/455378 also adjust 00:34:130 (2,3,4) to something like that
http://osu.ppy.sh/ss/45538101:46:463 (2,1) - if possible avoid this overlap, maybe use something like this (this specific pattern improves flow and playability as well):
http://osu.ppy.sh/ss/455399 01:49:130 (3) - maybe remove one repeat to match the melody follow, seems more appropriate for this diff, no need to adjust following
01:51:797 (2,3) - this overlap is hard to get rid of...but maybe you can come up with something?
[Hard]I had a long and repetitive post for this diff but it wouldn't help you at all. Instead I'll try a different approach:
This map seems like you forced it in to have a slightly less aggressive difficulty spreading. This map doesn't add anything to the set imho. You already have a "hard" with the [Challenging] map. This "Hard" seems like a slightly buffed normal but without the inspiration or flow of the other maps. If you want to go for a wider spread I suggest mapping a very simple < 2 Stars [Easy] instead. And personally I prefer E N I I to N H I I anyway...
[Challenging]00:29:130 (6,7,8) - If you try to re-arrange 00:27:797 (1,2,3,4) in that combo you could make more room for this neat pattern. The idea is great but it seems too cramped and would profit from spreading it a bit.
00:40:297 (6,7) - ugly

reshape (7) a bit to make the gap more like (5,6)
00:41:130 (1,2) - move the repeat point of (1) to 224/200 to avoid the overlap with 00:40:464 (7) (then copy-pasta-ctrl+h to replace (2))
00:43:130 (4,5) - this one is a bit tricky. You must not slide over the downbeat @00:43:797. I suggest using a beat placement like this with patterns of your choice:
http://osu.ppy.sh/ss/45543400:54:797 (2,3) - curving those sliders a bit would help to improve readability and looks just better:
http://osu.ppy.sh/ss/45544100:59:630 - missed beats? It plays "easier" if you include the red and blue ticks with stacked circles or whatever you fancy here:
http://osu.ppy.sh/ss/45544401:35:130 (2,3,4) - adjust position of (3) to avoid that overlap with (2)
01:51:463 (2,3,4) - again very ugly overlap of (2,4) - maybe you can come up with a slightly different pattern? the symmetry on (4) seems wasted in the surrounding asymmetric patterns
01:57:797 (4) - remove repeat. sliding over this pronounced downbeat messes up the whole beat pattern. add a circle @01:58:463 (X) which starts the NC there (place it exactly where the repeat would have ended)
01:58:630 (2,3,4,5,6,7,8,9) - pattern seems not as well placed as the rest of the map. Try something like this (also avoids unnecessary overlap for 02:00:463 (9,1)):
240,344,118630,1,0,0:0
168,288,118797,2,0,B|120:312|80:272,1,90,8|0,0:0|0:0,0:0
88,184,119130,1,2,0:0
184,192,119297,2,0,B|216:136,2,45,0|0|8,0:0|0:0|0:0,0:0
256,256,119630,1,0,0:0
240,344,119797,2,0,B|200:376|152:384,2,90,2|0|8,0:0|0:0|0:0,0:0
328,312,120297,1,0,0:0
392,256,120463,2,0,B|420:227|454:227|431:363|465:363|499:329,1,180,2|0,0:0|0:0,0:0
02:02:963 (3) - maybe don't stack this note. It breaks the movement without any indication in the song
[Extra]00:21:463 (5) - AHHHHH! remove. that. last. repeat.

sometimes "less is more" and in this case keeping the repeat just results in endless 1/2 notes which don't resemble anything happening in the song except for the basic rhythm. Sometimes leaving comprehensible gaps that fit the song makes the map harder overall than stupid 1/2 spamming.
Those circle patterns in the first KIAI! You can almost call them classic. I love this!
01:27:463 (5,6) - wrong timing! remove all repeats from (5) and start the long slider on 01:27:630 and end it on 01:28:130 without a repat, map 01:28:463 with a circle or start another short slider there and replace 01:28:630 (7) with the slider ending. Wither way the most dominant part here is the guitar and you SHOULD ignore the downbeat @01:27:797 as it is completely unaccented
01:41:797 (1,2,3,4,1,2,3,4,1,2,3,4,1) - pure chaos and random placement...is this really necessary? I'd love to see some more organized circle patterns like that awesome first KIAI here
01:48:963 (5) - maybe use a circle here instead and start a non-reapeating slider on 01:49:130 to match the song...right now it seems disconnected and random. not very intuitive

Some fine-tuning needed but imo still the best map of the set.
[Ono's Taiko Oni]Sorry Ono...I'm useless on this level of Taiko
