we've seen mafuyu being portrayed as a butterfly, but never in her fullest and truest form. the butterfly symbolises the self she could become, fragile, uncertain, but capable of feeling and moving freely,
she's slowly sealing off her cocoon and growing her wings, growing up
wait this is sad... in her fragment sekai there's a lot of "mafuyu's" that are sleeping and miku asks child fuyu why they're not awake andshe answers with
"thats smth i cant say... because i have to realise it myself...lately *that me* has always seemed sleepy"