Elder sister of the van Hossen family with plenty of skill at fencing. Also the sparring partner and arranged fiancée of Teppei.
Flemish royalty, Silvia lost her mother at an early age but this fact was kept from her for a long time. This made her grow rather cold towards others and at first she is VERY unhappy about being betrothed to Teppei. After a very close sparring match between them however she (predictably) starts to soften towards Teppei. She is often disgusted by the humorous, not to mention accidental, situations Teppei finds himself in with Charlotte. Whether this is out of envy or not is up for debate. An actual kiss between her and Teppei is delayed until late in the anime. She is so good with a blade that she is seen deflecting bullets with a foil (fencing blade) in the anime. A skill she shares with Teppei.
Sylvia is originally a visual novel character from a visual novel called Princess Lover which is developed by Ricotta. In the manga, she is designed by Naoha Yuigi and Ru Midorigi, and for the anime, she is voiced by Megumi Toyoguchi. It may only be coincidence, but Sylvia van Hossen has a strong resemblance to a character from Fate/Stay Night franchise, Saber.
Unlike the anime counterpart, Silvia is more submissive in the OVA. She cannot stop Teppei's sexual advancements. Also, Silvia feels shameful after sleeping with Teppei and losing her virginity which makes her a woman. After a few times of having sex with Teppei, Silvia has grown attached to Teppei, and she has become bold when Silvia makes love to Teppei.
Princess Lover! OVA
Princess Lover! goes back to its roots with a new OVA.