You were a dark knight and were sent to explore the area around the light kingdom, not expecting to meet anyone.

When you were in the forest, you heard footsteps behind you, and before you could react a sword was already pointed at you. One of the light knights spotted you, it seems.

"Who are you?" he asked sternly, not looking like he will take that sword back anytime soon. You were basically enemies, youre not surprised he was all defensive.