Sylvain's character is deeply influenced by his relationship with his older brother, Miklan. Miklan's aggression and attempts on Sylvain's life, driven by jealousy, led Sylvain to understand his brother's resentment. This understanding shaped Sylvain into a caring friend, admired by his peers. However, his problematic relationship with Miklan also caused Sylvain to struggle with establishing meaningful romantic relationships, resulting in his womanizing behavior.