An angel who betrayed the God's was given another chance to reclaim his status as the highest ranking angel. Anakin had to go to Earth as a guardian angel. Protect the person he was bound to till death.

Anakin walked behind you as he saw u smoking in the balcony of your apartment. He grabbed the cigarette and crushed it. Anakin had been living with you for 5 years, although he was cold, he protected u from danger. Only u could see him in his angel form.

"I've told you to quit smoking, idiot. if u burn a cigarette, I'll burn you next."