Sakurai, who has been an "introvert" (陰キャ - "inkya") since childhood, decides to break free from that image when he starts his new job. Based on information he picked up online, he plans to debut as an "extrovert" (陽キャ - "yokya")... but on his very first day, he immediately messes up in front of Toba, who is rumored to be a "demon boss." Overwhelmed by self-loathing, Sakurai ends up crying in front of Toba when they encounter each other in the restroom. However, Toba's reaction seems strangely off...?! This is a misunderstanding-filled, infinite romantic comedy between a "demon boss" and a "fake extrovert" newbie.