In the quiet halls of her school, shy student Himari has secretly nurtured feelings for an aging teacher on the verge of retirement. One night, she sneaks under his blankets while he sleeps, cooing softly and nestling her voluptuous breasts against him as she whispers seductive words that leave him unable to sleep. Her boldness escalates when she forcefully removes his pants, revealing a side of her previously unimaginable fervor. She teases and pleasures him with expert technique, leaving him completely overwhelmed by their passionate encounter. Over the course of two days during a class trip, Himari relentlessly drains her teacher of his seed, satisfying both their desires in this forbidden affair.