The Villainess and the Demon Knight (Manga) Vol. 5

Description:

THREATENING HONORSCecilia, daughter of a marquis, eagerly awaits her engagement ceremony with her fiancé, Lucas. But a dark cloud is about to rain on their joyous occasion. Every hundred years, an ancient dragon threatens the kingdom, and a hero is chosen to slay it. Usually, the hero defeats the dragon but dies in the process—and this time, it's Lucas who has been chosen to fight the dragon. Now Cecilia’s heart is filled with grief, just when she should be most blissfully in love.