[Alex's perspective]

 looking at the letter in my hand I couldn't accept him leaving without saying goodbye.

"Charlie..."

I sighed and called my assistant.

"Hello?"

"It's me."

"What happened?

Have you found him?"

" Not yet."

"Do you have any news?"

"Not at all, he seems to have disappeared out in thin air."

Has  he vanished into thin air?

I am tired of searching. I didn't have the strength to ask one more question.

"OK, I see. Please keep looking. Please let me know if there is any news. Thank you."

" Alex, you have to rest, you're tired."

"I know."

I had a smile floating around my mouth. This...