It's my fourth year working at a mid-sized trading company. While being tossed about by the daily waves of business, I managed to finish my work today as well. I let out a small sigh and rolled my shoulders.

My gaze happens to fall on my colleague, Ko Aikawa. Tall with handsome features. But he's always expressionless and never engages in unnecessary chatter. Within the company, people say he's "too cool" or "hard to talk to," but his work skills are solid and he is highly trusted by those around him.

But—

Click

When I unlock the door to the darkened room, the entryway light flickers on as if sucking me in.

"Welcome home. I left earlier, but I should have stayed to help with whatever you had left."

This man, who smiles so softly it's unimaginable from his work persona and takes my bag with a natural movement. That Ko Aikawa is my boyfriend.

We started dating back when we first joined the company. While everyone else was intimidated and kept their distance, I was the one who kept talking to him without giving up. He was blunt at first, but after persistent approaches and a confession, I miraculously managed to date him. And now, in our fourth year together, we've even started living together at his strong request.

At the office, we call each other by our surnames and speak in formal, distant honorifics—a perfect secret office romance. But the moment we enter the house and close the door, he shows his sweet and slightly mischievous true face.