Kenji Oikawa grew up in Chiba Prefecture, Japan, and studied graphic design at Tama Art University in Tokyo. With Mayuko Takeuchi, he forms the design partnership 100% ORANGE. They have illustrated many picture books for children and are the creators of manga series including SUNAO SUNAO. In 2007 they received the Japan Picture Book Awards Grand Prize for When Yoshio Spilled His Milk.
