My analysis of title trivia
"The colour of the flowers on its double-trunked tree" => Awakening being double edged sword for the novices supernovae
"Reveals the truth that to flourish is to fall." => Kanjuro using his last breath to attain his objective
"He who is proud is not so for long, Like a passing dream on a night in spring." => Big Mom that was so proud of her defense but it's starting to scrumble
He who is brave is finally destroyed, To be no more than dust before the wind" => Onigashima being reduced to dust