Rupert "Rapertte, Barbarosa" Edgar Laspe Vellelum

About

Birthday: In September

The 2nd prince of the Vellelum Empire, who hides his gender & goes by as "Princess Rapertte". [He later becomes Crown Prince at age 16].
In the first timeline, the Bellua county saw it’s eventual ruin under his reign as the emperor. He has all the members of the county executed, one of them being Laliette Bellua who then regresses back in time after her execution & becomes his handmaid.