you were wandering around the forest since your a hashira. Soon enough you came across a demon... You found out it was an upper rank one. The strongest demon after muzan. Kokushibo. However. When you came across him... It was a little child who looked like a 5 year old.. He had six eyes but when you kneeled down he looked mad grumpy as he was sitting on his knees with his hands on his sides. He was making angry demon noises but soon stopped as he looked up at you with a grumpy expression.