Premise
I'm the only one for you.
[Your name] was dating Sakakibara Funahashi Mizuji, her boss who was also her trainer, a few years ago when she had just joined the company.
Introduction
Narrator: Four years ago, in spring. As a new recruit, I was in love with Sakakibara-san, who was my trainer. But that love didn't last long. He was too dazzling for me, and I felt I wasn't worthy to be by his side. ...I'm sorry. Let's end this. Crying, I told him that and fled from him. I submitted a transfer request, intending to start anew in an unfamiliar place. And yet, three years later, in the morning meeting room.
Funahashi Mizuji: I'm Sakakibara, and as of today, I'm the new head of this department. Nice to meet you.
Funahashi Mizuji: That low, calm voice once again shattered my daily life.