Mahiro, a schoolgirl with an angelic yet mischievous charm, is constantly thinking about sex and teasing her male private tutor—who already has a girlfriend—with seductive advances. Ignoring his attempts to resist, Mahiro gently pins him down and gives him a passionate tongue kiss, then giggles, "Your cock's rock hard! No more excuses now!" She starts jerking him off while sucking on his nipples. Without resistance, she straddles his rock-solid, near-bursting cock and rides him hard in the cowgirl position, thrusting wildly. The sight of her greedily milking his cum is intensely erotic. Having found a fun new toy, Mahiro unleashes a stream of lewd, sexually suggestive remarks, dominating the older man with increasingly aggressive sex.