Mika, the shy wife who couldn't even meet the eyes of anyone other than her husband, never in a million years would have interacted with another man. Her husband loved her, never having to worry about her being unfaithful. One day, her husband brought his boss, Sawaki, home. Although Mika couldn't even look Sawaki in the eye, Sawaki stole a glance from her husband and gazed at Mika, then kissed her. The look in Sawaki's eyes... Mika could never forget. It was a shock that felt like a stake driven into her heart. And the next day, unable to sleep a wink, Sawaki came again...