While seeming like a flirtatious social butterfly, Himari is actually a virgin on her first job! She secretly harbored feelings for her senior, Nakamura, vowing to confess if she surpassed his sales performance. After finally achieving her goal, she manages to set up a private celebration with him. However, due to excessive drinking from nervousness, she blacks out. When she wakes up, she finds herself in Nakamura's bed, seemingly having had a one-night stand…！？
