Limited Wardrobe: He is only at any time noticed putting on a dogi and going barefoot. This is often taken to the extreme in a single piece of artwork wherever Ryu is carrying out his laundry in his underwear (there, it functioned akin to an evil version from the Denjin https://indexedbookmarks.com/story18564816/not-known-details-about-hibiki-ryusui-hyakka-harmony