Keito, a beautiful married woman, experiences her first affair with a man other than her husband. When her underwear is removed, her voluptuous F-cup figure is revealed, leaving one breathless at her beauty. Bound with rope that restricts her movement on her pale skin, she screams intensely each time the electric massager is applied, writhing in overwhelming pleasure. In this restrained state, as a thick penis penetrates her, she reaches orgasm repeatedly—capturing the authentic ecstasy of a modern cheating wife.