Hino Misaki, a full-time housewife, has given up on her dream of being a manga artist. Her husband, Toru, is a manga editor, and their son, Yuto, has a severe allergy. When she sees a flyer recruiting new manga artists, Misaki begins drawing at night. One day, after leaving Toru to watch over Yuto, Yuto dies after a severe allergic reaction. After the funeral, Misaki learns that Yuto died due to an allergy attack from muffins from Toru's affair partner. A woman who wished for small happiness, but after realizing her wish would not come true, chose the path of revenge
Sakuraba Haruma's childhood friend Inukai Shuji was a cut above him in every way imaginable, living out the glamorous life bestowed upon him. Haruma, an unassuming salaryman, has lived his every day clutching onto his inferiority complex, existing only in Shuji's shadow. One day, Haruma coincidentally meets Shuji's wife, Inukai Reika, who Haruma has always secretly admired since his high school days. With feelings of envy, jealousy, and more, a "secret" is born from Haruma's repetitive days.
