It took two words from Edward to Krystal.

"Hi"

Krystal looked up from the book she's been reading and saw Edward stood in front of her.

Krystal's eyes darted from side to side. No one's around; well, not around her, nor around him. Unmistakably, Edward La was talking to Krystal Kim.

"Um ... hi?"

Edward smiled, a lopsided one. Then, "Bye."

"....bye?" Krystal was frowning hard, but Edward only nodded contented with the confused goodbye as he walked away, hands shoved deep into his pocket while whistling.

At night before Krystal closed her eyes, she faintly remembered the song Edward whistled to; it was a soundtrack to Pirates of the Caribbean, wasn't it?