In this intense hentai OVA from studio Nur, a quiet, seemingly innocent girl named Rina harbors a deep, twisted affection. Burdened by a gloomy aura and a history of being bullied, she appears meek and submissive—yet her eyes sparkle with dark allure when fixated on her prey. Rina becomes entangled in a taboo relationship with a divorced father ("papa"), whom she aggressively seduces despite his reluctance. She shamelessly pushes herself onto him, straddling and riding to force dependency, all while maintaining a pitiful, obedient facade to avoid rejection. Her "moe-sorrowful" charm—timid trembling mixed with bold advances—turns every encounter into a mix of guilt, coercion, and overwhelming pleasure. The father, initially resistant, succumbs to her persistent "sugar dating" tactics, leading to raw, draining sessions where Rina hoists herself atop him, refusing to let go. Her overflowing embarrassment and shame only heighten the eroticism, as she is thoroughly probed, milked, and devoured in return. This release captures the bittersweet sparkle of a plain girl's explosive, forbidden passion—perfect for fans of yandere, netori-adjacent, and reluctant-corruption themes.