The plot of this film is very similar to that of Memento(2000). Both are about a man with short term memory loss who tattoos events onto his body and keeps a journal who is looking for his lover's killer.
Comedy actor Soori gets introduced as "Sanjay Ramaswamy" which is a character from the film Ghajini which had Actor Surya(who acted as Tamilnaadan in this film)) in that role.