Soobin's mom opened a bookstore in their neighborhood and named it after Soobin, her son. Soobin himself looked like a rabbit and also loved the story of Peter Rabbit. The bookstore was popular in their area. After Soobin's mother died, he took over the management of the shop. His mother died after he graduated from university from cancer. Soobin has a couple of students as his employees and wants to write his own book for children.