Silfa HMX-17c is a supporting character in the visual novel and anime series 'To Heart 2.' She is the third model in the HMX-17 series of maid robots, created by Kurusugawa Electronics. Silfa is shy, soft-spoken, and often struggles with self-confidence due to her perceived inferiority to her predecessor, Ilfa. Throughout the series, she gradually develops her own unique identity and forms deep bonds with the main characters, playing an important role in the story's exploration of human-android relationships.