Yumi's Diary is a collection of diary entries written by Yumi, the main character in the webtoon Yumi's Cells. The book contains a scene from the cartoon that can be understood by both those who have read the webtoon and those who haven't seen it, along with Yumi's diary written that day. Extra stories were also recorded through separate pages.
- Component: Yumi's Diary
*Pictures are for reference only*