Luka is too asheme to do that?

Considering as she's a virtual idol singer by trade (at least, hypothetically... seems like the other vocaloids still have their jobs, anyway...) it seems odd she's not willing to do a little "Heaven may forgive you, but Megurine Luka will not!"

Idol or not, adult playing as mahou shoujo is just.....embarassing.

she already did something more embarrassing