Yusuke seeks the help of Chisa Sakurai from the R&D department to finalize a new line of seamless lingerie. By using coercion and blackmail after catching her in the office after hours, he forces her to create the necessary samples. As Chisa uncovers a corporate hacking scandal involving high-level executives, she unexpectedly finds herself succumbing to Yusuke's advances, blending professional tension with illicit passion.