"Oh? Oh!" Mitsue Hiragi is a very popular picture book writer such as "Kororin Poi!" (HOLP Publishing). The "Aka-chan is happy" series not only has the impact of the unique cover picture, but also the gestures that can be comfortably moved even by Aka-chan's small fingers and the fun of its movements, and has sold a total of 27 titles in the series (as of December 2024) since its release in 2016 (as of December 2024) with a total of 3 million copies! It has become a new standard for picture books for babies that parents and children can enjoy. In the picture book navigation, the four popular books in the series "O? "Kororin Pa!" Produced "Pitanko!" as "Picture Book Navi Original Goods". Taking advantage of the humorous atmosphere of picture books and the excitement of moving the shikake, a number of surprisingly adorable products were born. These are women's socks. A picture book "Kororin Pa!" in which you put your finger on the "Kororin" with a round eyeball and run on a winding road. At that time, the women's socks with Rin's cute embroidery as a highlight were completed! Based on the three colors of pink, blue, and green, which are inspired by the picture book of "Kororin Pa!", "Kororin" with different colors and expressions on the left and right sides is embroidered. It also has a playful pop design that is different from the toe. You can choose your favorite color or buy all three colors at once! There are also kids sizes, so parents and children can enjoy wearing them together. It is also recommended as a gift along with picture books.