Wataru's character development is an extremely BETTER EXECUTION of the "wimp to hero" plot concept over Ryotaro's. That's primarily because even after Ryotaro matured in "Saraba Den-O," it still felt like to the audience that he didn't change much and that he'll still fall flat on his ass if someone pushes Ryotaro with their pinky finger..........while Wataru just gives you that badassery stare like he did in the last episodes of Kiva when he fought the Fangire suit-less......as well as when he approached Tsukasa in Decade.