Falls in love with and marries Vijay. She becomes jealous of Sathya due to Vijay's continued preference for his best friend and actively participates in attempts to break their friendship.
Sumathi develops deep romantic feelings for Vijay early in the narrative.
Marthandan is Sumathi's biological father and primary authority figure.
Sumathi resents Sathya's enduring influence over her husband.
Explore the full interactive character relationship map of Udan Pirappu