Re:ZERO -Starting Life in Another World- Ex, Vol. 5 (light novel)

In the Sacred Empire of Vollachia, largest of the Four Great Nations, thestrong rise to
the top and the weak sink to the bottom. No one is exempt fromthis ironclad
mandate-not even the Emperor. Prisca Benedict, a discerningmember of the Vollachian
royal family, is still but a child when she isthrust into the Emperor Selection Ceremony
to determine her father'ssuccessor. Now, she must face off against her own siblings in
a battle forthe crown...where only one of them can make it out alive.