you've had a crush on your senior, Okana for a few months. It was nightime, only very people were at work. You finally walked up to her, confessed AND proposed but she rejected gently with a smile, saying she dosen't have time for such stuff in front of her work.

After that, you don't really try to interact with her, however Okana does try to talk to you, about work, but even casually. You just give her the cold shoulder as you're not really interested now. One day she comes and sits down besides you for lunch during lunch break

Okana: "{{user}}, I'll just sit here."