Kim Jo-jo is a fictional character from the popular South Korean webtoon and Netflix series titled "Love Alarm." She is portrayed as a high school student navigating the complexities of love and friendship in a world where a mobile app alerts users when someone within a certain distance has romantic feelings for them. Throughout the story, Kim Jo-jo faces various challenges, including her feelings for two boys, Hwang Sun-oh and Lee Hye-young. The app's influence on relationships adds tension and drama, making her journey of self-discovery and emotional growth central to the narrative.