Told you this really fits. So I made this little edit to test my theory. Whoever wrote this really knew what's going on. Look:
"Fall came early (meaning early-childhood trauma, also fall has a double sense here. It both refers to sudden change in the season, and falling from above, which physically and metaphorically happened in the mist of events)
My sun was taken (highlighting either the loss of his Grandmother or of his colors)
So I locked myself inside (well, literally)
Restart (him joining Poppy in her adventure)
Fresh start (getting closer to the Trolls while helping out Bridget)
Head start (being the only Troll ready to give out hope, while everyone else became faithless)
Spring (if Fall meant the loss of his Grandma, then Spring means finding Poppy, someone new to love)
Chains become strings (how he found his long-lost voice, thus freeing himself from the chains holding his mind back to the past, and getting back his colors)
Lift up (he lifted up his own spirit)
Lift up (he lifted up everybody else's spirits)
Rise (becoming as one with she who just became the new ruler of their kind)
I am Branch (simple say, though indication of wholeness in identity)
Bloom" (metaphor for growth with the flower symbol, mentioning what happens to branches on Spring-time, but it could also refer to Poppy, of course)
No one:
Absolutely no one:
My brain the whole time watching Wicked:
Dashi: Due to personal reasons, I will be sinking to the bottom of the ocean in a small puzzle box.
Chase: Did Wuya say 'I love you' and you said 'Thanks'?
Dashi: THE REASONS ARE PERSONAL–
Dashi, reading a recipe: Beat three eggs?
Guan: It means like in hand-to-hand combat.
Dashi: Ohhhh-
Chase: Both of you get out of this kitchen.