The Billionaire's Heir I Never Knew Was Mine

Three days passed.

Surprisingly, nothing dramatic happened to Sienna Adams in the last three days.

Her work went smoothly. Reports were submitted on time, no guests complained loudly enough to ruin her mood, and no one accidentally blamed her for things she didn’t do, which, in her experience, already counted as a small miracle.

Even the anonymous messages stopped.

As if Angie Feliz had suddenly remembered she had better things to do than send vague threats to people who refused to react.

Sienna, of course, chose to take the mature route. She ignored the anonymous text completely.

As for Zachary... that was another story. That man still hadn’t replied to her text.

At first, Sienna had been bothered. Then she felt confused and slightly offended. And in the end... she felt dramatically disappointed.

But now?

Now she had reached the stage of forced acceptance.

”Maybe he’s overseas,” she muttered one morning while organizing her desk. ”Important business trip. No signal. No internet. Possibly fighting for his company’s survival...Or maybe he just forgot.”

”No,” she corrected herself quickly. ”We are choosing the overseas theory. It sounds better.”

And honestly, it worked.

Her mind felt lighter these past few days. Not entirely calm, but at least not spinning out of control every five minutes.

Which was why, when she walked into her office this morning, she expected another peaceful day.

But of course, peace never lasted.

The landline rang just as she settled into her office chair.

Sienna blinked, slightly surprised, before picking it up without much thought. ”Sienna speaking.”

There was a brief pause.

Then a woman’s voice came through the line.

”Miss Sienna...”

Sienna frowned slightly. The voice was unfamiliar. Not from her department. Not from anyone she spoke to regularly.

”Yes, it’s me,” she replied, her tone polite but cautious.

”I’m Belinda from Mr. Benjamin Foster’s office...”

The moment she heard the name, her entire body shivered.

’Benjamin Foster...’

This is the first time Sienna has heard that name again since he last texted her, offering help only to ask her to become his woman in return. And since that day, she blocked his personal cell to restrict their interaction to business only.

But now that man is asking his secretary to contact her.

How could she avoid him?

”...You need to come to Mr. Foster’s office now,” the woman continued, now with clear insistence. Her tone wasn’t rude, but it wasn’t friendly either. It carried a strange sharpness that instantly made Sienna tense and curious.

And before Sienna could even respond—

The line ended.

Sienna was speechless, staring at the phone in her hand.

”...Excuse me?” she whispered. ”Even the secretary has the same ugly attitude as the boss. How rude!”

For a few seconds, she didn’t move.

Then she slowly put the phone down.

”Maybe that woman called the wrong extension?”

Sienna let out a gentle sigh, already sensing a dull ache settling in her head.

Reluctantly, Sienna stood up, grabbed her notebook as if it might somehow provide some security and protection to her, and headed out of her office.

As she walked toward the elevator, her thoughts stirred once more.

’Why does Benjamin suddenly want to meet me in his office?’

The question repeated itself in her mind like an annoying echo.

This had never happened before. Not once. Benjamin didn’t call her through his secretary unless something was wrong.

Or worse, unless he wanted something.

Sienna pressed the elevator button a little harder than necessary. The doors slid shut.

As the elevator began to move, Sienna leaned back against the cold metal wall, her reflection staring right at her.

From the outside, her expression looked calm, composed, and professional. But inside? It was a completely different story.

Her thoughts were already forming one dramatic theory after another, none of them pleasant. And all of them somehow involve Benjamin Foster doing something unnecessary.

’This is definitely unusual,’ she thought. ’Why did Benjamin suddenly summon me to his office? What could be his reason this time?’

Her fingers tightened around the notebook in her hand, as if holding onto it would somehow calm her. Because if there was one person in this company she didn’t trust, it was Benjamin Foster.

The elevator dinged softly, and the doors slowly slid open.

Sienna straightened her posture almost instantly upon noticing a slender woman in her early thirties, dressed neatly with a perfectly neutral expression, standing not far from the elevator.

With a single glance, she knew the woman was Belinda, Benjamin’s secretary.

”Miss Sienna, follow me...” Belinda said, her tone flat, already turning on her heels before Sienna could respond.

”...Good morning to you too,” she muttered softly, though the woman was already walking away, ignoring her greeting.

With a quiet sigh, Sienna followed.

Belinda walked ahead with the confidence of someone who had absolutely no interest in small talk with those of lesser importance.

Sienna, on the other hand, had plenty to say to her. She simply voiced it in her mind.

’Does she always act so rudely, or is it just me she despises? No. No. This woman probably doesn’t like anyone beneath her position or social class. That may be her full-time job, hating everyone beneath her... What a snobby bitch.’ She stifled a laugh at her own thoughts.

Suddenly, Belinda stopped in front of a tall oak door and turned around to see her.

”Mr. Foster is already waiting for you inside. You may enter.”

Her tone sounded as cold as before, as if she were announcing something routine rather than sending someone into an emotional battlefield.

Then she opened the door.

Sienna forced a polite nod, though inside she was already venting her frustration. ’Why does she sound like she’s sending me to my execution?’

”Miss Sienna, what are you waiting for? You might enter now...”

Sienna blinked. She clenched her fist tightly.

”Can you speak nicely?” She wanted to say it, but the words stuck in her throat. Because, at this moment, her mind was already busy with so many thoughts, and her heartbeat was beating a little faster than usual.

’Calm down,’ Sienna told herself firmly as she stepped forward. ’This must be work-related. No need to think negatively...’