Basic Info.

​The story follows Itang, the main character, who becomes a murderer after an accidental incident, setting off a tense cat-and-mouse chase with Detective Toy, who is determined to track him down. The narrative delves deeply into Itang's psyche, exploring his inner turmoil and emotional transformation in the aftermath of the murder.​

Additional Info.

​"The original webtoon Murderer ㅇ Toy used the Roman letter ""o"" in its title, but for the drama adaptation, the ""o"" was replaced with the Korean consonant ""ㅇ."" The title Killer Toy is an intentional wordplay, carrying multiple ambiguous meanings depending on interpretation. The consonant ""ㅇ"" (i-eung) allows for layered readings of the title: 1.Murderer and Perplexity: Refers to Lee Tang as the murderer and the detective Toy, who is chasing him. 2.Murderer's Embarrassment: Highlights Lee Tang's awkward situation after accidentally committing a murder. 3.Murderer's Perplexity: Depicts the detective's struggle and inability to catch Lee Tang, leaving the detective swayed by the murderer. 4.Murderer Nan-Gam: References Detective Nan-Gam, who killed Song Chon. 5.If ""ㅇ"" is interpreted as the alphabet ""O"" or the number ""0"": -Murderer O Difficult: Implies a case with a clear murderer. -Murderer 0 Difficult: Suggests an awkward situation where there’s no possibility of catching the murderer. The creator, Little Bi, intentionally left the title open to interpretation, encouraging fans to derive their own meanings. In both the webtoon and drama, the title retains the Korean consonant ""ㅇ,"" and the author personally reads it as Murderer Lee Eung-Nam-Gam. In the original webtoon, Lee Tang accidentally kills his target without realizing their identity, later discovering that the victim was a morally bad person. However, the Netflix drama reinterprets Lee Tang as a dark hero motivated by justice, adding a new dimension to the character. "​