Rinrinko, who works as a department head at an underwear manufacturer, is strict with her work and has sometimes been gossiped about as the 'arrogant female boss.' At such times, a complaint comes from a customer's mail-order company... Rinrinko apologizes on behalf of her subordinate, but the other party feels arrogance in her business-like attitude and reveals even more anger, demanding 'There's no sincerity!' and forcing vibrator insertion. The complaints continue, and every time she is summoned, Rinrinko is humiliated with a vibrator. However, this humiliation gradually turns into a secret pleasure...
