Kotoko Minei is a slightly weary 24-year-old office worker. Her days are filled with work, and her only small pleasure is a drink in the evening. One day, an incubus named Elu appears in her dream. An incubus is a demon that feeds on the life force of women. However, the words he utters upon seeing Kotoko are... "Wow. This girl is completely drained of life force and energy." From that day on, Elu visits Kotoko's 8-tatami mat one-room apartment, cooking and feeding her delicious meals. His reward for the delicious food is—a kiss. No matter how many times she tells herself she shouldn't be attracted to an incubus, that he's only kind to her so he can eat her, Kotoko finds herself gradually drawn to him because of his delicious food and warm words. Meanwhile, Elu also wonders why he cares so much about one particular woman... What will become of the love story between the caring incubus and the weary woman?!