Periods of Dreaming) also known by the initialism KKK, is a 2022 Indian Tamil-language television series that airs on Disney+ Hotstar.

The first season of Kana Kaanum Kaalangal which consists of 132 episodes, was released through the streaming service Disney+ Hotstar on 22 April 2022 ended on 8 December 2022.

[9][10] The series stars Teja Venkatesh, Raja Vetri Prabhu, Aravind Seiju and Deepika Venkatachalam, Aashik Gopinath, while VJ Sangeetha, Irfan, Rajesh, Bharath Kumar, Deepika Damu, Akshathaa Ajit, Pranika, Pragateesh, Aegan, VJ Kalyani, Surendar KPY, Parvez Musharaf and others appear in supporting roles.

The show begins with a school being shown and its correspondent, Mr Shaktivel talking to the cleaner, Sagayam about its reopening after the pandemic.

Kalai is saved by Jayakumar, the warden, and sent to Siragugal Higher Matriculation Secondary School, where he gets a chance to restart his life.