i'm not sure of adding Ash and Pikachu to the tags o.O, why not just Pokemon?
NoHitter's Symbol
00:03:334 - dont place the inherited timing section on top of the notes, always 1/4 before as minimum, so if you hit early the you hear the sound efect.
00:03:334 (1) - how about replace this slider for 3 beats at 00:03:334 - 00:03:536 - 00:03:737, then the slider from here: 00:04:140 to 00:04:542
00:08:569 (5,1) - be consistence with spacing here
00:18:636 - remove this timing section
Speed Symbol
00:03:323 - see NoHitter's Symbol
i barely could see the SB warning alert, u should put it bigger and with a intense color.
00:16:411 (8,1,2,3) - space this 3 evenly, and make them a single combo, for more intuitive jump ^^
u work with 1/8 snap, be sure anything is snapped at 1/8 by mistake
you could lower a bit the hp drain just a suggestion n.n
Relax Symbol
i supose this is equivalent to a normal diff, right?
00:04:035 (2) - this beat is hard to read, suggesto make (2,3) a slider
00:06:954 (1) - too close to prev combo
00:08:565 (1) - same
00:11:787 (1,1,1) - avoid jumps on normal or easy diff
00:16:619 (3,4) - kinda confusing, unstack?
00:19:438 (1) - too far from prev combo
00:23:062 (1,1,1,1) - same with the jumps
NoHitter's Training
if this is the easiest diff, hp drain should be lower than Relax Symbol
low the slider velocity a bit
nice work
post it in my queue again for a recheck
cya