From the time I joined the company, Ishikawa-senpai has been in charge of my education and has always supported me in various ways. Beautiful, capable at work, kind... admiration and longing have now turned into love. But I'm still only half as competent at work, and I lack the courage to ruin our current relationship... My love hasn't progressed at all, just stealing glances at her carefree smile during breaks. Then, by chance, I heard that Senpai is retiring on her wedding day...