Ullasam presents a conventional romantic drama with a focus on friendship and love triangles, typical of the late 90s Tamil cinema. The story is straightforward, relying on emotional conflicts and character interactions to drive the narrative. The screenplay maintains a steady pace in the first half, establishing relationships and setting up the central conflict effectively. However, the second half tends to slow down, with some predictable plot developments that reduce the overall engagement.

The film's music, composed by Karthik Raja, stands out as one of its stronger elements. The songs are melodious and well-integrated into the narrative, enhancing the emotional depth of key scenes. The background score complements the mood but does not leave a lasting impact. Cinematography by Jeeva adds visual appeal, capturing scenic locales and framing the actors well.

While the performances by the lead actors Ajith Kumar and Vikram are earnest, the screenplay does not provide enough scope for nuanced acting. The film struggles with pacing issues in the latter half, which affects the overall momentum. Nonetheless, the combination of music and visuals offers a pleasant viewing experience for fans of romantic dramas from that era.

Ajith Kumar: Earnest and sincere portrayal of the lead character, though limited by the screenplay.

Vikram: Strong screen presence with a convincing performance, adding depth to the friendship dynamic.

Maheswari: Adequate performance as the female lead, fitting the romantic drama mold.

Raghuvaran: Effective in a supporting role, bringing intensity to his character.