[SSNI-789] Junior female student masturbates with a vibrator in class, her pussy twitches and her expression is lewd.

In the back row of the classroom, a female student in her school uniform secretly inserted a vibrating egg into her vagina, her legs clamped together, her fingers frantically fiddling with it under the desk. She bit her lip, her brow furrowed, her expression a mixture of pain and lewdness, her vaginal fluids flowing down her thighs. The teacher's lecture became background noise; she focused solely on the vibrations of the egg inside her, digging deeper and deeper, experiencing increasing pleasure, until finally climaxing in class, her vagina spasming, a moan almost escaping her lips.