Amaharuno Ai was hired for a part-time customer service job and received a uniform, with the work regulations requiring all buttons on the shirt to be fastened during duty. The tight collar and tightly knotted tie created a mysterious training experience, making the uniform feel oppressive both physically and mentally. As she diligently carried out her daily tasks, she gradually became aware of its growing discomfort. While struggling with the restrictive clothing and rigid rules, she continues to challenge herself to maintain her sense of identity.