A charismatic editor that worked for a famous publisher, Yumemi became independent ten years ago and founded her own publishing company, LightShip. As CEO, she is Ayako's employer. Yumemi is an amorous woman with a masculine manner which has led her to divorce three times--each a result of cheating on her spouses. Despite earning a high salary, most of her wealth goes into paying alimony to her ex-husbands. Yumemi is fond of Ayako and encourages her to find love.