Beautiful calligrapher Umi Oikawa. Every time she writes characters, an uncontrollable sexual desire wells up inside her, driving her into intense sexual obsession. Her sexual fetish is wild and filthy, climaxing with massive squirting during sex. Wielding her brush to write obscene characters, the sight of her gushing huge amounts of fluid drives viewers insane. Craving thick, large cocks, she orgasms violently in her throat while repeatedly squirting in a perverted frenzy. Bound and stimulated with a wand vibrator, she loses control, releasing waves of squirting through multiple vibrators and electric stimulation. She endures continuous creampie sex and brutal pounding, drenched in floods of cum. Even while drinking loads of facial cumshot, her act of exposing her own sexual desires captivates all who watch.