Akira Hayasaka is a female construction worker who deliberately maintains a male presentation to hide her gender from colleagues. Possessing auburn hair and grey eyes, her considerable physical strength enables her to handle the site's demanding labor. When new hire Akiyoshi joins the crew, she helps him carry heavy materials. This act triggers an unexpected attraction in Akiyoshi, who still perceives her as male. Later, Akiyoshi accidentally interrupts her late-night shower during her designated private time. Mistaking this intrusion as him uncovering her secret, Akira proactively seduces him to secure his silence. Unbeknownst to her, Akiyoshi had not discerned her gender during the encounter due to her wearing a towel. This results in Akiyoshi mistakenly concluding she is a man expressing romantic interest. Akira's motivation for concealing her gender is solely to avoid workplace scrutiny or repercussions.