Ryuichiro Isaka, an editor working at Marukawa Bookstore, a publishing company owned by his parents, is a spoiled rich kid who joined the company due to family expectations, despite his aspirations to become a writer. His senior colleague and caretaker, Kaoru Asahina, had been taken in by the Isaka family at a young age due to certain circumstances and has been by Ryuichiro's side ever since...? "Junjou Mistake" depicts the past and present of Ryuichiro Isaka, the executive director of Marukawa Bookstore, and his capable secretary, Kaoru Asahina. (thetvdb.com)