what happened to the back and forths
obviously each kiai has three main intense parts
00:50:506 (1,2,3,4,5,6,7,8) - the singer goes back and forth between two notes, so the notes should also be back and forth, right up to 8.
01:00:106 (1,2,3,4,5,6,7,8) - this is the second intense part because the singer again goes back and forth between two notes rapidly
01:02:656 (1,2,3,1,2,3,1,2,3,4,1,2,1,2,3,1,2,3,4,1,2,3,4,5,6,7,1) - last part of the kiai, you can clearly hear the rise in intensity
why are those first two parts intense? not only because the density of the vocals is higher (sing more notes per second) but because the singer alternates between two notes, which is very very noticeable, hence the back and forth pattern.
well, 01:00:106 (1,2,3,4,5,6,7,8) - is also back and forth, so why aren't the hitcircles perfect back and forth, like the other pattern? well, the first back and forth notes, the singer sings at an interval of a 3rd, with 1 note between them. also, the background instruments are playing at the tonic key, which is the main key of the song. this is why the song sounds so stable. hence, the flat back and forths to express the stability of the song at this time.
the second back and forth at 01:00:106 (1,2,3,4,5,6,7,8) - is NOT at the tonic key, and the singer sings at an interval of a 2nd, which is why the song sounds a little more unstable. this instability is expressed by the rotating back and forths instead of linear back and forths
finally, at the last part of the kiai we see some harmonic planing, which just means that the song is continually rising in key, this is very clearly heard. the map should be increasing in intensity again throughout this section, which it is, and nobody complained about it. i'm just mentioning it here so we get a better view of the bigger picture
in otherwords, the kiai is characterized by increasing instability, which is expressed by the stability of the first back-and-forths, and then the more unstable second back-and-forths, and finally the harmonic planing section which is not a single pattern at all.
the lynchpins of this progression are the three sections i have mentioned. just because they are not louder does not mean they aren't more intense. intensity isn't determined only by volume, but by the notes the singer is singing, the density of the vocals, the chord which the song is played at at that moment, and how this fits into the context of the entire song. please do not decrease the intensity of those jumps, and don't hesitate to revert the first section to purely back and forths, if you wish to.
mapping is not just about providing justification for every pattern, mapping is about expressing the feeling of a song. sometimes a mapper maps something he feels is right, and just because he can't provide 100% convincing justification does not mean he is wrong. don't hesitate to criticize, but please have some trust in experienced mappers.