When chaos ends, I remain. Born from battle or sums, I mark what's left behind. Not the fight, but the shadow it casts. What single word names me?

I’m from the past, but with you still. From the time you went rolling down the hill. Every one of my kind comes with a story. Some folks wear me as a badge of glory.

An endless flow, A boundless river, I crumble empires, I stumble kings, before my might, even the mightiest quiver

My symbol is a winged dove People pray for me with love Tolstoy's story paired me with my opposite To achieve me doesn't happen overnight.

In darkness I hide. Master of jutsu and knife. Shing! sound my kunai.