[Starmine18 (HANABi)] My And My Onee-san's Pleasurable Studies

A masked tutor with huge breasts and an even bigger appetite for control turns every study session with her young student into an exercise in femdom torment, smothering him in paizuri and milking him with slick handjobs. Her lessons run on orgasm denial — sucking him off under the desk through English drills only to stop right before he finishes — so correct answers become the sole path to release, rewarded with counted strokes of her skilled fingers. Sweater lifted, gloves on, she disciplines and rewards in equal measure, keeping her shota pupil desperate, blushing, and utterly devoted to her curriculum.