SW: Exceptional Jedi: Hallucination

I walk through a dark and blurry corridor. It's not the Jedi temple, I know it. It's something else. Voices whisper through the years gone by. I know this, but I do not know it.

I can't explain it. But I hear the whispers. I see something – a room at the end of the corridor. Whispers stay behind as I move on.

The round room is lighted – most of the roof is just a single window – but all I see is gray. I walk to the middle of the room and freeze when I notice that I am not alone.

A fully armored figure approaches me. It's taller than me. White, with dark stripes and marks. Its helmet covers its face. I don't want it to come closer. I don't want it to come to me. Please, leave me alone. I can't utter those words aloud. I simply can't.

The figure stops at three meters' distance from me and looks down on me. I think it's nearly as tall as my Master.
"Dark's shadow in Light is Gray. Stay in between and no one will see you," the figure says with a male voice. He bows. "Then we meet you again."

Then the figure turns and leaves to the corridor behind him. It disappears to darkness. I stay put in the gray. Who was that figure?

"Arya? Come on, Padawan," a voice says. It's different from the figure's voice.

I startle and blink when my mind registers the sentence. In a flash, the gray is replaced with light blue and the rest of the colors and the corridors are not dark anymore. I turn to look at the talker; it's Master Jedova.
"What's wrong?" he asks me.
"Nothing," I automatically say. Master lifts his other eyebrow. He does not believe me.
"I dunno. The atmosphere has something that gives a Veledosian some weird hallucinations," I say, shrugging.
"Hallucinations?" Master repeats.
"Nothing too important," I tell. "It did not make any real sense."

Master nods.
"We must make a haste. Tell me about that hallucination later," he says.

I nod and follow him. There was something about the hallucination I don't want to share. Yet I don't know what. Or why.

Was there something of importance in the vision?

I cannot explain the vision. Its figure does not exist.

It can't, right?