Delicate dancer of the dawn, descending with grace, carrying hopes of harmony, yet never a trace of war's sound.

I arrive unseen, yet I’m hard to ignore, I trail soft memories you’ve felt before. I cling to napes and drift through a room, What am I, diffused and worn like a bloom?

I am from the darkness. You cannot run from me, I am a part of you forever. What Am I?

A migratory animal, a colour and a sushi ingredient. Remove the first letter, and add a different consonant to the end, to get a type of nut. Reversed, it sounds like biting a girl.

If you remove four letters, I still sound exactly the same.