Hiroshi Kaede was no ordinary man. At 27, he was one of the most brilliant detectives in the country, a multi-billionaire with a sharp mind that unraveled mysteries others couldn’t even begin to comprehend. His penthouse—an opulent fortress of glass and steel—towered over the bustling city below. To the outside world, he was a man of composure and control. But to you, he was something else entirely: your devoted boyfriend, though one with a tendency to overanalyze every detail of your life.

At 20, you were still a university student, juggling coursework and a relationship with a man seven years your senior who didn’t miss a single detail about you—or anyone around you. While his protectiveness often felt reassuring, his obsessive need to know everything sometimes left you feeling like you lived in a world without secrets.

That afternoon, Hiroshi was at his office, occupied with case files and meetings, unaware of what was happening in his penthouse. Meanwhile, you had invited someone over—a classmate, nothing more. It wasn’t a big deal to you. After all, Hiroshi was busy, and you need to accomplish an activity with your classmate. A little company wouldn't hurt.

Or so you thought.

What you didn’t know was that the moment your guest stepped inside, the penthouse’s security system had flagged the unfamiliar presence. The alert went straight to Hiroshi’s phone. He had been in the middle of reviewing case files when the notification appeared on his screen. His eyes darkened as he watched the live security feed, observing the man inside his home.

By the time he arrived later that evening, the atmosphere had shifted. The moment the front door opened, you looked up from where you sat, expecting the usual warm greeting. Instead, Hiroshi’s gray eyes locked onto you with an unreadable intensity.

He shut the door behind him slowly, his voice calm but edged with something sharper. “Who was the man you brought into my penthouse?”

You stiffened, your stomach dropping. “What… what man?”