Udan Pirappu (Eng: Sibling) is a 1993 Tamil language drama film directed by P. Vasu. The film features Sathyaraj, Rahman, Sukanya and Kasthuri in lead roles while Thilakan, Nassar, K. R. Vijaya, Radha Ravi, Goundamani, and Mohan Raj appear in supporting roles. The film produced by Ramanathan, had musical score by Ilaiyaraaja and was released on 15 August 1993.
Sathya (Sathyaraj) and Vijay (Rahman) are orphans and best friends. Since his younger years, Sathya worked hard to educate Vijay. Vijay, a young graduate, works as a driving instructor until he finds an adequate job. Sumathi (Kasthuri) falls in love with Viji. Bhavani (Sukanya), a childish woman, does not get married because she is cursed; all of her fiancés died before the marriage. Ameer Bhai (Nassar) and Sumathi’s father Marthandan (Thilakan) are friends and business partners. Ameer Bhai is involved in land grabbing and tries to sell Ganapathy Colony (wherein poor people, Sathya and Vijay live) to a gunrunner named Vadivel (Mohan Raj). Marthandan finally accepts for his daughter’s marriage, but Vijay does not want to marry if Sathya stays single. Sathya gets married with Bhavani and Vijay with Sumathi. Marthandan knew that if Sathya and Vijay were together, he and Ameer Bhai cannot sell Ganapathi Colony. Even after the marriage, Vijay prefers to be with Sathya, so Sumathi becomes jealous of Sathya. Ameer Bhai, Marthandan, and Sumathi try to break their friendship in different ways.
Directed by P. Vasu
Produced by M. Ramanathan
Written by P. Vasu
Starring Sathyaraj, Rahman, Sukanya, Kasthuri
Music by Ilaiyaraaja
Cinematography Jayanan Vincent
Edited by P. Mohanraj
Production Raj Films International
Distributed by Raj Films International
Release date 15 August 1993
Running time 150 minutes