Makoto is staying with his aunt Sayaka, who lives in the suburbs of Tokyo, while attending cram school. His aunt is very plain, stuffing her face with rice crackers and wandering around in unfashionable underwear every day. Makoto is disillusioned by the raw reality of his aunt, which is far from the "sweet life with my beautiful aunt..." However, one day, when he looks closely at his aunt as she sleeps, he is surprised to see that she has a beautiful face... Since then, Makoto has become curious about his aunt, and when he sneaks into the couple's bedroom, he sees his aunt in a lewd state that he would never normally imagine...