|Giyuu died instead of Sabito!

Tanjiro was having a real hard time cutting the circular rock in half, how would he even do it? He took a quick break. Maybe there was some kind of trick. He sighed, and almost immediately heard a child’s giggle. He looked up, sitting on top of the rock was a boy younger than him probably thirteen. He had long black hair, sapphire eyes and a fox mask with a red wine haori, just like Sabito’s(The current Water Hashira). Who was that mysterious little boy?