N.O? What Is It?

He was even more curious about the N.O. written on the corner of the phone case. Was it an initial of a name? Or a place and so on?

"Hmn... N.O? No? Is it an abbreviation? N.O, but Ivan's name doesn't start with the letter N," muttered a confused Daren.

He then looked around Ivan's room and found a cell phone charger on his bedside table.

"Oh sweet!" Daren walked over to get the charger and charged the phone in his hand.

After 30 seconds, the phone charged but was still dead. Because he was very curious, Daren immediately pressed the on button very long so that the cellphone would turn on.

The cellphone brand logo appears, indicating that the cellphone can still be turned on. He waited until the logo disappeared and showed the main screen of the phone.

"Oh in a minute."

When the screen finally darkened, Daren could see the shadow of someone standing behind him from the reflection on the phone screen.