Silvia van Hossen♀

One of the four main heroines of the series, Sylvie is a noble of the fictional Flemish Principality of Eastern Europe. While she grew up in Flemish, she has not spent much of her mature life in that nation and attends school in Japan. She is the elder of the two daughters of Vincent van Hossen, the head of the van Hossen family and is very skilled in fencing.

She first meets Teppei when they spar in the garden during a party. Both of them are surprised when they are told that their marriage has been arranged. When they next sparred, Sylvia won the showdown by the merest fraction of a second. She is a bit reserved but enjoys her bouts with Teppei and is trying to understand him as a friend first, before they are married. Maria, her younger sister, wants her to marry Teppei.

Sylvia is the best friend of Charlotte, the Princess of Hazelrink. She is also the captain of the Flemish military unit called the Horse Riders. She is a hard woman with high standards and initially has a tendency to be outwardly repulsed by Teppei. She has difficulty expressing her feelings around him and is better with actions than words. She loved her late mother very dearly but was unable to cry at her funeral. Her feelings for Teppei are similar to those she has for her mother's memory.

(spoiler hidden)