While working as a private tutor, Ririka hides her true nature as a genuine female masochist, regularly visiting her dominatrix. At the entrance, she kneels naked in dogeza, delighting in having her head stepped on by shoes, obediently submitting like a female dog to her master's commands. Bound tightly with hemp rope, she repeatedly reaches climax, gushing squirt each time, her body marked with clear rope burns as she wears a blissful expression. Her loyalty and devotion are the most important aspects of her existence.