Yun-Ook Jang is a freelance illustrator who rents out a room to help pay off her debts. Her tenant is a drop out named Bum-Moo Lee who only has a part-time job. Before Yun-Ook knew how old Bum-Moo was, he seemed rather mysterious and cold to her, and the two argued all the time. But what's this?! He's only seventeen?! He's just a kid who ought to be in school! Then one day, Bum-Moo asks her a dangerous question: "Do you mind if I like you?" (Source: Yen Press)

Forest of Gray City was published in English by Yen Press from February 21, 2007, to August 12, 2008. It was also released in Polish by Yumegari from March 17, 2016, to June 20, 2016.