1. 1. Disney; http://www.disney.co.jp/
2. 2. Sanrio; http://www.sanrio.co.jp/
3. 3. Pokemon Company; http://www.pokemon.co.jp/
4. 4. Y. Koshikawa; Consideration on Characters and Brands - Development of Area Revitalization and Yuru-chara -, Kohoku Kiyou, 34, pp.161-176, 2013 (in Japanese).
5. 5. D. Wakabayashi and M. Inada; Isn't that cute? in Japan, cuddly characters compete, W. S. Journal, 2012.