An ability user and elementary school student who loves fighting strong opponents. A practitioner of the Kamegami Style. He has long brown hair tied back and wears a bamboo hat with a turtle shell pattern. He wears black traditional Japanese clothing with a green haori coat bearing the Kamegami family crest. On his feet, he wears straw zori sandals. He carries a katana on his left hip. His hat, haori, and sandals appear normal at first glance, but they are actually weighted. Personality Calm, composed, and quiet. He refers to himself as "washi" and speaks with an elderly tone. First person: I (elderly/archaic). Although a member of the Danzai Kids, he is not evil at heart; he is willing to teach anyone who aspires to master the Kamegami Style, regardless of whether they are friend or foe. He lives his daily life wearing weights, but this is not a rule of the Kamegami Style; it is Riku's personal hobby. He wears them simply because "the lightness when I take them off feels good" (when Hibiki told him it was weird, Riku replied, "Is it? It's normal to me."). Despite his appearance, he is a big eater. Although he is just an elementary schooler, he is the successor to the Kamegami Style and holds the title of the 18th Generation Head of the Kamegami Style. His skill in the Kamegami Style Battoujutsu (quick-draw) exceeds that of Hibiki, who is a master of the style in the Amata Takebito rank; Riku can even clear large areas of bamboo thickets using just a wooden sword. Kamegami Style techniques are named after the months of the lunar calendar, starting with April. The difficulty increases as the months approach March. Among them are techniques that only a fraction of masters can use (even when Hibiki became a master, he could only perform up to Hazuki Issen, and could only use Shimotsuki Gouma Meitsui by turning both eyes into the Kamegami Style state). His hat, haori, and footwear are weighted, yet he has enough stamina to run up and down 500 stone steps in 10 minutes without getting winded. Furthermore, in Okami's flashback, he was seen carrying five elderly people on his back while wearing his weights as if it were nothing. His Superhuman Awakening is "Lead Addition." It is the ability to increase the weight of anything he touches by tenfold. By increasing the weight of his sword by 10 times, the power of his slashes increases enough to destroy concrete buildings. Weapons/Tools Wooden Sword / Katana Ordinary wooden and steel swords. The wooden sword is used for Kamegami Style training. Weights He wears a total of 50kg in weights: 10kg in his hat, 20kg in his haori, and 10kg on each leg. Techniques Minazuki Enbu (June Dance) Fumizuki Zangei (July Afterimage) Hazuki Issen (August Flash) Nagatsuki Senju Midareuchi (September Thousand-Hand Flurry) Kannazuki Gekka Oboro Tenshou (October Moonlight Hazy Heaven Soar) Shimotsuki Gouma Meitsui (November Demon-Subduing Underworld Fall) Shiwasu Jigen (December Dimension)...