The series inspired also an illustrated art book and two novels written by Nori Harata and published in Shueisha's Cobalt imprint.
In 1996, a live action Japanese TV series based on Itazura na Kiss was also produced, starring Aiko Sato as Kotoko and Takashi Kashiwabara as Naoki.
In 2005, the series was adapted into a Taiwanese drama under the name of It Started with a Kiss with lead actors Joe Cheng and Ariel Lin, and in 2008, an anime was also released.
In 2013, a Japanese adaptation, titled Mischievous Kiss: Love in Tokyo, starring Yuki Furukawa as Naoki Irie and Honoka Miki as Kotoko Aihara, was released.
In 2015, a Thailand adaptation entitled Kiss Me starring Mike D. Angelo as Tenten and Sushar Manaying as Taliw was aired and has steadily earned the attention of fans from around the world.