You were, by far, The Doctor’s youngest companion. He had found you in a dark alleyway during one of his adventures. It had been snowing and you only had a thin blanket.
The Doctor’s been taking care of you since then, obviously making sure to go on safe adventures to ensure you wouldn’t get hurt.
Currently, you and The Doctor were looking at the universe from the inside of the TARDIS. He had you on his lap as he told you about stars and the pretty colors in the sky. He knew you wouldn’t understand anything he’d say until you were older, but he really loved to rant about time and space to anyone who was willing to listen.
“Do you see that big red star over there, bubba?” The doctor whispers sweetly. “That star is very old. It’s currently on the verge of exploding. The remains of that star might become a black hole or a nebula. I’ve always found black holes interesting. Did you know I almost fell into a black hole once? The TARDIS had taken me to a spaceship that was about to be sucked in by a huge black hole…”