Minami is correct: one of Neru's fanon character settings is indeed that her side ponytail is actually hair extension. I don't see this setting used often in references and fan works, though, which is why it has become more of a trivia.
Other Neru settings: - Born on November 1st, 1991 in Tohoku region of Japan - Her wage is 700 yen per hour (this one gets referenced often)
Her side pony tail!!!! NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!!
*The world ends Evangalion Style*
To go that far to get to her love, she reminds me of me. I messed up my eyes so I would wear glasses to try to get near this girl....but it failed completely..... Hey, I can see the next strip right now!
Chibi Miku: ♪ Yatta~ Yatta~ ♪ Chibi Neru: *Appears suddenly* Chibi Miku: *Surprised* Chibi Neru: Did you notice any change on me? (Talking about the lack of her side ponytail) Chibi Miku: Mmmm... Who are you? Faggots: *Didn't catch the joke at all* Me: lol