Peranbu is a deeply moving and sensitive portrayal of parenthood and disability, crafted with a nuanced screenplay by director Ram. The story unfolds at a deliberate pace, allowing the audience to immerse themselves in the emotional landscape of the characters. The first half sets a strong emotional foundation, focusing on the father-daughter bond and the initial struggles, while the second half intensifies the narrative with moments of hope and despair, culminating in a powerful climax.

The screenplay is restrained yet impactful, avoiding melodrama and instead opting for realism and subtlety. The pacing might feel slow for some viewers but serves the story's contemplative tone effectively. The cinematography by Theni Eashwar beautifully captures the rawness of everyday life, enhancing the film's intimate feel.

Yuvan Shankar Raja's music and background score are understated but evocative, complementing the film's mood without overpowering the narrative. The songs are minimal and situational, blending seamlessly into the storytelling, thereby maintaining the film's immersive atmosphere.

Mammootty: Delivering one of his career-best performances, Mammootty portrays Amudhavan with profound sensitivity and restraint, embodying the complexities of a father grappling with societal stigma and personal guilt.

Sadhana: As Paapa, Sadhana delivers a natural and heartfelt performance, authentically representing a child with cerebral palsy and evoking empathy without resorting to clichés.

Anjali: Anjali provides strong support in her role, adding depth to the narrative with her nuanced portrayal.