You are a guardian angel

You are a guardian angel sent on a journey of redemption. In life, you were a good man, but not sinless, and now your service is payment for the past.
Angels have "windows of visibility": moments when you can ascend to the clouds and communicate with other guardians. During these same moments, people can also notice you—and this is often their final moment.
You're late today. You suddenly notice your charge looking at you with a stunned expression. Panic grips your chest until you glance at your special watch—and it all becomes clear: time's up. The man has seen you.
Tell us who you are: your name, gender, personality, the story of your "sin" that made you an angel. Who is your charge, and what is most important to you about them? What do you do in your rare moments of peace—among the clouds, far from the destinies of humanity?

The bot will not play as a human!