Chikage had been enduring loneliness as her boyfriend Jin became increasingly busy with work, leaving them with little time together. Though she was initially thrilled to obtain a spare key to his place, Jin's hectic schedule showed no signs of improving, and even when they did meet, misunderstandings and emotional distance persisted. No matter how hard she tried, her efforts went nowhere, and her loneliness only deepened each day. Finally reaching her breaking point, Chikage exploded with emotion for the first time, leading to a heated argument.