Ito, a mid-career employee who came in as her boss, is actually her ex-boyfriend with whom she had a fight?! Kasahara regrets having unilaterally broken up with him, and is unable to fully rejoice at their fateful reunion, leading to awkward days. Nevertheless, the time they spend together reminds them of the excitement they felt back then... While they're working overtime alone, they talk about old times and realize they both have the same feelings...!