At a women's magazine company, the most intimidating figure is editorial section chief Hibiki Hasegawa, whose fearsome glare has earned him a reputation as the office demon. His subordinate, Kasumi Mugino, is a popular writer admired by colleagues for her cheerful professionalism, but she harbors a hidden past as a former delinquent. One day, while desperately searching for a lost photograph that could expose that past, Kasumi stumbles upon Hibiki making sweets in the break room. Stunned to see her terrifying boss immersed in a domestic hobby, she accidentally draws his attention and is caught. Instead of punishment, she discovers that the demon boss is actually a shy, sweet‑toothed man who loves baking. This chance encounter leads to a fake relationship that quickly blossoms into genuine feelings. Both protagonists possess secret sides: Hibiki’s fearsome mask conceals a gentle, romantic nature, while Kasumi’s polished image hides a rough‑and‑tumble background. Their office romance progresses through awkward first dates, mutual attempts to coax each other out of their shells, and obstacles from jealous coworkers who try to sabotage them. As the story unfolds, they navigate family interference, deepen their trust, and eventually move in together. The narrative is built around the contrast between their public personas and private vulnerabilities, culminating in a sweet, committed relationship. A new series launched after fan demand continues their story, introducing further hidden secrets and reinforcing the theme of a lovestruck, dere‑filled boss who remains endearingly awkward in private.