Diana from Zero Time Dilemma and Dahlia Hawthorne from Ace Attorney:Trials and Tribulations.
Ace Attorney and Zero Escape are my favourite video game series ever, so I wanted to draw a little crossover between them. Diana reminds me a bit of Dahlia: they both have similar hair, their names start with D (?) and they are related to an important necklace. Diana and Dahlia can probably be represented by the good and the evil respectively (at least as far as we know in Diana's case).