While steadily advancing in his career, Shintaro repeatedly makes mistakes, always being covered by his coworker, Kyoko. Despite their superior-subordinate relationship, they secretly nurture a hidden romance within the office. One day, Kyoko commits a major error, forcing her to stay late for overtime work. Out of consideration, the department manager assigns Shintaro to assist her. But as they work together, Shintaro notices something unusual in Kyoko's usual composure—seeing her flustered for once ignites an unexpected arousal within him...