Marriage in ashes

Amber is the third daughter of Emperor Hector, ruler of the Fire Empire of Inis, a great empire that has always been in conflict with the Water Empire of Pyravis. Now, after decades of war, the emperor of Pyravis proposes a marriage alliance, and finally a peace agreement is reached between both empires. Emperor Hector would send his eldest daughter to the wedding, but it turns out that, just a few days before the ceremony, she is found dead under mysterious circumstances. Now Amber must discover her sister's killer while agreeing to marry the crown prince of the Pyravis Empire.