After being seriously injured by the Nephilim, Hibiki is unable to control her Symphogear.  She flies into a rage, destroying the Nephilim and ripping out its heart.  During the post-fight medical exam, it's discovered that if she continues to use her gear, she'll die.
Are you serious?
هل أنتِ جادّة؟
Ist das dein Ernst?
Oye, ¿es en serio?
Oye, ¿eso es en serio?
Tu penses vraiment ça ?
Ehi! Stai dicendo sul serio?
Está falando sério?