Kulir 100°

Surya is the son of a gangster and studies at a Chengalpattu school. His mother, who is separated from her husband, wants him to grow up as a model citizen. Surya is violent like his father and gets expelled for beating up a teacher. Surya, who is attached to his mother, promises that he will not take the path to violence again, and joins the Lake View School in a hill station. Surya is looked down by his snooty seniors led by school bully Rohit and his gang. The only people who stand with him are Babloo and Tanya, the principal Yeshwanth Raj's daughter, who has a soft corner for him. Under extreme provocation, Surya keeps his cool as he tries to live up to his mother's expectations. However, he relapses after Babloo is murdered and goes on a revenge spree. After achieving his revenge, Surya returns home but learns from his father that his mother died in a road accident.

Kulir 100° is the first Tamil film directed by Anita Udeep. According to her, the title "indicates it's both cold and hot which means that opposites attract, the basic framework of the film".^[1] She spent almost a year on screen testing potential actors before finalising Sanjeev Karthick and Riya Bamniyal as the lead actors. Karthik Sabesh, who plays Sanjeev's friend, is the son of Sabesh of the Sabesh–Murali musical duo, and was recommended to the director by them.^[4] Bamniyal, previously an advertisement model, made her feature films debut. A non-Tamil speaker, she tried learning the language for playing her role.^[5]

The film was made on a budget of ₹30 million (US$320,000). Filming took place in locations including Switzerland, Kullu, Manali, Yercaud, Ooty,^[1] and London. While the story takes place primarily in a hill station, Anita intentionally left the place unnamed, calling it her "own dream land".^[6] The film includes a kissing scene between the lead actors, resulting in the censor board giving it a U/A certificate.^[7]

The music was composed by Bobo Shashi.^[8] It is his debut film.^[4] The songs "Hip Hop Hurray" and "Manasellam" attained popularity.^[9] Karthik Srinivasan of Milliblog wrote, "Given Bobo Shashi's background (being Murali's – of Sabesh Murali fame – son!...Deva's clan!), the predominant hip-hop and rap mix is surprising. Sounding like the B-grade version of Dharan doesn't help, though".^[10]

Sify said, "The film lacks the magic one associate with boarding school brat pack movie. Let us hope Anita Udeep, learns from her mistakes and finds a better script in her next outing."^[11] Pavithra Srinivasan of Rediff.com said, "Kulir 100 Degrees tries very hard to simulate the lives of youngsters, but it seems to flit to the next scene before any scenario can be fully explored, leaving you with a sense of dissatisfaction. In the end, the result is rather half-baked. The cool visuals and neat songs are the only compensation" and rated the film two out of five stars.^[3] IANS wrote, "While the visuals are okay and backed by an average musical score, the underdeveloped characters sink the film irretrievably".^[12]

Malathi Rangarajan of The Hindu reviewed the film more positively, appreciating the story and screenplay, and lauded the director for "balanc[ing] the plausible and the commercial with élan".^[13] Chennai Online wrote, "The director has started off the movie well but looses [sic] track, as she takes the movie to a different plane, which is more of a deviation than a development. The major problem of the movie is its lack of focus and non-happening screenplay".^[14] The New Indian Express wrote, "Fairly engaging and targeted at the urban teens, Kulir… has a western sensibility and scores on elegance and style. Some more pep and zest, and a better conviction in its scripting and story telling, would have worked to the film's advantage".^[15]