Narumi works for an insurance company.On the way back from a seminar with a man who looks like a senior, she is asked to appear on a program and she decides to appear with a man who looks like a senior.She is stuffed with rewards there, kisses and hugs with her co-workers, and gradually goes into a naughty mode with her co-workers.Narumi-chan can't hide her embarrassment when she sees the erect penis of her senior in the company.Eventually she also gets lustful and has sex with her colleagues.