I'm in the same boat... its been years but I was looking a random battle in youtube and had the song and now I can rest in peace. For some reason I never find it in the Naruto OSTs
haha i just realized how they practically left byakugan on its very first stage from the early times of the series where it all basically was kids dueling and hunting each other in a competitive forest where it all made sense. not that naruto wouldnt be the another best anime ever beside of re:zero, but i would love to have seen evolution in byakugan as well.
Hiruzen: Muito bem, vamos começar! Estilo Fogo, Jutsu Bomba do Dragão Flamejante! Hiruzen: Very well, let´s start! Fire Style, Flame Bomb´s Dragon Jutsu