“Ryo is a girl who is 17 years old. She's one of two protagonsits. She has black, trendy short... Ryo “Ryukyu Sadano is a 17 year old male, and is one of two protagonists. He has dark brown hair... Ryukyu Sadano “Mr. Shinaku is Ryo's and Ryukyu's first period teacher. Very easy going.. Mr. Shinaku Pages in category "Characters" The following 3 pages are in this category, out of 3 total. M Mr. ShinakuR RyoRyukyu Sadano Retrieved from "http://ryukyuryo.wikia.com/wiki/Category:Characters"