noun
desire to change one's appearance; obsession with transformation
Often used in psychological or colloquial contexts to describe a strong wish to alter one's looks, identity, or body. Can imply a deep-seated or compulsive desire.
彼女は変身願望が強くて、毎月髪型を変えている。
She has a strong desire to change her appearance and changes her hairstyle every month.
変身願望をテーマにした小説を書いている。
I'm writing a novel themed around the obsession with transformation.
Compound of 変身 (transformation) and 願望 (desire, wish). The exact historical derivation is uncertain, but the word is a straightforward modern combination.