It’s Inori! Yes, the vocals for the anime band EGOIST from Guilty Crown.
But EGOIST doesn’t stopped in being part of Guilty Crown but also outside including Psycho-Pass.
The photo above was used for the single Fallen which is used as the ending theme of the second season of Psycho-Pass.
EGOIST was formed in Guilty Crown but also used outside the anime and working under supercell.
Chelly, was the vocals for EGOIST.
Hoping for more EGOIST! >_<