Board Thread:General Discussion/@comment-76.20.152.224-20130826231849/@comment-3076833-20130827015744

It is something, as the first anon said, that producers are free to do and with the lack of personality in most Vocaloids including Luka there's nothing stoping them to say "No she isn't like that", but even then producers do as they please and nothing is preventing them from doing that.

Her "slutty" nature in some songs is most likely due to the fact that even out of the big 8 she's one of the oldest next to (arguebly) Meiko, and alongside Lily. It's not a nature i've seen in most Luka ones though, she's either just a mature lady or a Geisha girl. Most disturbing i've seen of Luka is Wash My Blood.

But at the end of the day every Vocaloid has a differing personality in each song so there's bound to be ones you may not like as much and you aren't required to agree with them and hence not listen to songs where they are protrayed like that.