Sylvère von Olstein is a significant character in the visual novel series Eden's Ritter. He serves as the loyal knight and protector of the protagonist, Cecilia. Known for his chivalrous nature and unwavering dedication, Sylvère is both a skilled swordsman and a wise advisor. His presence provides emotional support and guidance to the main cast. Throughout the story, he plays a pivotal role in battles and is deeply committed to upholding justice and protecting those he cares about.