Analytical Appraisal: Neku Sakuraba (The World Ends With You Character Analysis)

I don't have a character specific joke this time, just fear that the TH-cam gods are going to smite me for putting five TWEWY songs in this vid.
I have known of The World Ends With You for probably a decade by now, but I was only able to truly become a fan of the series last year, and ever since then, Neku was a character I wanted to take a deep dive into, so join me as I discuss key events surrounding Neku, week by week, to explain what makes this character so excellent.
Spoiler Warning for:
The World Ends With You
The World Ends With You: Final Remix (A New Day)
Music in order of appearance:
It's So Wonderful Final Mix (Composed by Takeharu Ishimoto; from the "The World Ends With You: Final Remix" Original Soundtrack)
Twister (Composed by Takeharu Ishimoto and sung by Sawa Koto; from the "The World Ends With You" Original Soundtrack)
Transformation (Composed by Takeharu Ishimoto with lyrics by Sawa Koto and vocals by Andrew Mitchell; from the "The World Ends With You" Original Soundtrack)
Tatakai (Composed by Takeharu Ishimoto with lyrics and vocals by Stephanie Topalian; from the "The World Ends With You -Solo Remix-" Original Soundtrack, and featured on the "Subarashiki Kono Sekai -Crossover-" Soundtrack released to coincide with -Solo Remix-)
Someday Unplugged / サムディ -Unplugged (Composed by Takeharu Ishimoto with lyrics and vocals by Sawa Koto; from the "Subarashiki Kono Sekai + The World Ends with You" Album, and later on the "The World Ends With You -Solo Remix-" Original Soundtrack)