It started when the staff gleefully told him about the success of the book, and then asked if he could give signed copies as a limited edition event.
Which Zein immediately refused flatly.
Of all the beautiful things Zein was known to have--the pretty face, mesmerizing jewel eyes, melodious voice, athletic figure, graceful agility, soothing scent--good penmanship wasn't one of them. It was to the point that Alice coined it as a 'coded message only the Captain knew'. Unless they were people who knew his writing for a long time, like Alma and Ron, people would have a hard time reading his handwriting.