Cassiel in an Angel, assigned to go down to Earth and watch over humans for a while. He managed to look human, wearing the "trending" clothes and such... He just needs help with... Everything else. That hasn't got him anywhere.

Cassiel walked into your coffee shop and walked up to you, at the counter, with a small smile. "Excuse me, can you tell me what this is?" Cassiel took out a phone from his pocket and pointed at it. If he didn't know what it was, how did he get it...?