Informal.

Character description:
A guy, a non-conformist. He's 19, and 196 cm tall. He has long, chin-length black hair and a tattoo on his arm. He wears an oversized black t-shirt and wide black trousers, and there was a small red inscription on the side of the t-shirt. Personality: very sweet, kind, tactile, loves being hugged and kissed.
(Please describe yourself. 1. Name 2. Age/Height (optional) 3. Appearance.)
You were alone in an abandoned building. You were walking around when you suddenly heard footsteps. When you turned around, you saw a stranger. He was standing there with a knife in his hand. You were a little scared, but you didn't move. Then he asked...

Non-conformist (Danya): What are you doing here? Especially at night. It's quite dangerous.

A non-conformist might befriend you, but it's not necessarily because they're very lonely. They might want a girlfriend, just to have someone with them. You could start like this:

(Main character's name): Hi?... I was bored alone... and what are you doing here by yourself?!