Yiyoung is building a startup with his college friends. They get a chance to present their proposal to SJ Corporation, one of the leading companies in the country. But in the meeting room he sees Kang Daehyung, the extremely handsome company big shot that's so very much his type, and Yiyoung's heart starts to race...! Can pretty-faced Yiyoung win both in love and his career? (Source: Tappytoon)

On or Off is originally a webtoon series which has been officially published in book format by D&C Media (디앤씨미디어) since July 3, 2020. The series was published digitally in English by Tappytoon from June 13, 2019 to February 27, 2022. The volumes have been published digitally in English by Tokyopop under the Love x Love imprint since July 27, 2022, and in print from September 27, 2022.