[Arima Teppei](https://anilist.co/character/23500/Arima-Teppei)'s fiancée and sparring partner. She is very skilled in sword fighting and enjoys her spars with Teppei. She is a bit reserved and is trying to understand Teppei being a friend first.

She is the elder of the two daughters of the Head of Van Hossen Family, [Vincent van Hossen](https://anilist.co/character/22547/Hossen-Vincent-van). [Maria](https://anilist.co/character/22509/Hossen-Maria-van), her younger sister wants her to marry Teppei. Her best friend in school is [Charlotte](https://anilist.co/character/20476/Hazelrink-Charlotte), the Princess of Hazelrink.

__Mother:__ ~!According to the eroge, her mother is Japanese and Vincent van Hossen's first wife. This means that Sylvia's sister, Maria, is her half-sister, since Maria's mother is the second wife of Vincent Van Hossen.!~